2008

127.     "Reactive Intermediates from DMDO-Oxidation of Ynamides. Trapping of a De Novo Chiral Push-Pull Carbene via Cyclopropanation."
Al-Rashid, Z. F.; Hsung, R. P. Organic Lett. 2008, 10, 0000-0000.

126.     "A Mutually pi-Facial Selective Cyclopropanation of Chiral Enamides Using Dirhodium(II) Carbenoids.
Lu, T.; Song, Z.; Hsung, R. P. Organic Lett. 2008, 10, 0000-0000.

125.     "An Unexpected Reversal of Diastereoselectivity in the [4 + 3] Cycloaddition reaction of Nitrogen-Stabilized Chiral Oxyallyl Cations with 2-Furoates."
Antoline, J. E.; Hsung, R. P. Synlett. 2008, 0000-0000. [An Invited Article for the Cluster Communications on "Chemistry of Allenes and Alkynes." Hisashi Yamamoto, Ed.]

124.     "Aza- and Carbo-[3 + 3] Annulations of Exo-Cyclic Vinylogous Amides and Urethanes. Synthesis of Tetrahydroindolizidines and An Unexpected Formation of Hexahydroquinolines."
Ghosh, S. K.; Buchanan, G. S.; Long, Q. A.; Wei, Y.; Al-Rashid, Z. F.; Sklenicka, H. M.; Hsung, R. P. Tetrahedron 2008, 883-893. [An Invited Article for Tetrahedron-Symposium-In-Print on the Cycloaddition and Benzannulation Approaches to Functionalized Aromatic Compounds.]

2007

123.     "Syntheses of Amide Substituted Isoxazoles and Pyrazoles via Regioselective [3 + 2] Cycloadditions of Terminally Unsubstituted Ynamides."
Li, H.; You, L.; Zhang, X.; Johnson, W. L.; Figueroa, R.; Hsung, R. P. Heterocycles 2007, 0000-0000. [An Invited Article Dedicated to Professor Ekkehard Winterfeldt on the Occasion of His 75th Birthday].

122.     "Studies on A Urea Directed Stork-Crabtree Hydrogenation. Synthesis of C1-C9 Subunit of (+)-Zincophorin."
Song, Z.; Hsung, R. P.; Lu, T.; Lohse, A. G. J. Org. Chem. 2007, 72, 9722-9731.

121.     "An Enantioselective Total Synthesis of (+)-Aigialospirol."
Figueroa, R.; Hsung, R. P.; Guevarra, C. C. Organic Lett. 2007, 9, 4857-4859.

120.     "A Stereoselective Intramolecular Halo-Etherification of Chiral Enamides in the Synthesis of Halogenated Cyclic Ethers."
Ko. C.; Hsung, R. P.; Al-Rashid, Z. F.; Feltenberger, J. B.; Lu, T.; Wei, Y.; Yang, J.; Zificsak, C. A. Organic Lett. 2007, 9, 4459-4462.

119.     "Stereochemical Control of Both C-C and C-N Axial Chirality in the Synthesis of Chiral N,O-Biaryls."
Oppenheimer, J.; Hsung, R. P.; Figueroa, R.; Johnson, W. L. Organic Lett. 2007, 9, 3969-3972.

118.     "A Two-Carbon Homologation of Aldehydes and Ketones Using Ynamides."
You, L.; Al-Rashid, Z. F.; Figueroa, R.; Ghosh, S. K.; Li, G.; Lu, T.; Hsung, R. P. Synlett 2007, 1656-1662.

117.     "Practical Synthesis of a Chiral Ynamides. (R)-4-Phenyl-3-(2-Triisopropylsilyl-ethynyl)oxazolidin-2-one[2-Oxazolidinone, 4-Phenyl-3-(2-triisopropylsilyl-ethynyl)-, (4R)-]."
Sagamanova, I. K.; Kurtz, K. C. M.; Hsung, R. P. Organic Syn. 2007, 84, 0000-0000.

116.     "A Rhodium(I)-Catalyzed Demethylative-Cyclization of Ortho-Anisole Substituted Ynamides in the Synthesis of Chiral 2-Amido-Benzofurans."
Oppenheimer, J.; Johnson, W. L.; Tracey, M. R.; Hsung, R. P.; Yao, P.-Y.; Liu, R.; Zhao, K. Organic Lett. 2007, 9 2361-2364.

115.     "A Formal Total Synthesis of (+)-Zincophorin. Observation of An Unusual Urea Directed Stork-Crabtree Hydrogenation."
Song, Z.; Hsung, R. P. Organic Lett. 2007, 9 2199-2202.

114.     "Stereoselective Cyclopropanations of Chiral Enamides."
Song, Z.; Lu, T.; Hsung, R. P.; Al-Rashid, Z. F.; Ko, C.; Tang, Y. Angew. Chem. Int. Ed. 2007, 46 4069-4072.

113.     "A Triazole-Templated Ring-Closing Metathesis for Constructing Novel Fused and Bridged Triazoles."
Zhang, X.; Hsung, R. P.; Li, H. Chem. Commun. 2007, 0000-0000.

112.     "Stereoselective [4 + 3] Cycloadditions of Nitrogen-Stabilized Oxyallyl Cations with Pyrroles. An Approach to Parvineostemonine."
Antoline, J. E.; Hsung, R. P.; Huang, J.; Song, Z.; Li, G. Organic Lett. 2007, 9, 0000-0000.

111.     "An Intramolecular Aza-[3 + 3] Annulation Approach to Azaphenalene Alkaloids. Total Synthesis of Myrrhine." [A Special Article Dedicated to Professor Wayland E. Noland on the Occasion of His 80th Birthday].
Gerasyuto, A. I.; Hsung, R. P. J. Org. Chem. 2007, 72, 0000-0000.

110.     "Syntheses of 2-Pyrones via Electrophilic Substitutions at C7 of 6-Methyl-4-Hydroxy-2-Pyrone Through Mono- or Dianion Formation."
Zhang, X.; Munoz R. L. P.; Swidorski, J. J.; McLaughlin, M. J.; Wang, J.; Hsung, R. P. Synthesis 2007, 71, 749-753.

109.     "An Unusual Stereoselectivity in the Anomeric Substitution with Carbamates Promoted by HNTf₂."
Ko, C.; Hsung, R. P. Organic Biomol. Chem. 2007, 7, 431-434.

2006

108.     "Aza-[3 + 3] Annulations. Part 6. Total Syntheses of Putative (-)-Lepadiformine and (-)-Cylindricine C." [A Special Issue Dedicated to Professor Steven M. Weinreb on the Occasion of His 65th Birthday]
Wang, J.; Swidorski, J. J.; Sydorenko, N.; Hsung, R. P.; Coverdale, H. A.; Kuyava, J. M.; Liu, J. Heterocycles 2006, 70, 423-459.

107.     "Rhodium(I)-Catalyzed [2 + 2 + 2] Cycloadditions of Ynamides in the Synthesis of Amide-Substituted Chiral Biaryls."
Tracey, M. R.; Oppenheimer, J.; Hsung, R. P. J. Org. Chem. 2006, 71, 8629-8632.

106.     "Copper Salt Catalyzed Azide-[3 + 2] Cycloadditions of Ynamides and Bis-Ynamides." [Invitation to a Special Issue on "Catalytic Cycloaddition and Cycloisomerization Reactions," Michael P. Doyle and Hisashi Yamamoto, Ed.]
Zhang, X.; Li, H.; You, L.; Tang, Y.; Hsung, R. P. Adv. Syn. Cat. 2006, 348, 2437-2442.

105.     "Stereodivergent Total Syntheses of Precoccinelline, Hippodamine, Coccinelline, and Convergine."
Gerasyuto, A. I.; Hsung, R. P. Organic Lett. 2006, 8, 4899-4902.

104.     "Ketal-Tethered RCM Strategy Toward the Synthesis of Spiroketal Related Natural Products." [Tetrahedron-Symposium-In-Print on the Transition Metal-Mediated Reactions in the Natural Product Synthesis.]"
Hsung, R. P.; Ghosh, S. K.; Liu, J.; Ko, C.; Wang, J. Tetrahedron 2006, 62, 10485-10496.

103.     "Synthesis of the C1-C16 Fragment of Spirastrellolide A."
Liu, J.; Yang, J.-H.; Ko, C.; Hsung, R. P. Tetrahedron Lett. 2006, 47, 6121-6123.

102.     "Tandem Azidination- and Hydroazidination-Huisgen [3 + 2] Cycloadditions of Ynamides. Syntheses of Chiral Amide Substituted Triazoles."
Zhang, X.; Hsung, R. P.; You, L. Organic Biomol. Chem. 2006, 8, 2679-2682.

101.     "Torquoselective 6p-Electron Electrocyclic Ring-Closure of 1-Azatrienes Containing Acyclic Chirality at C-Terminus."
Sydorenko, N.; Hsung R. P.; Vera, E. L. Organic Lett. 2006, 8, 2611-2614.

100.     "Copper(II)-Catalyzed Amidation of Alkynyl Bromides as a General Synthesis of Ynamides and Z-Enamides. An Intramolecular Amidation for the Synthesis of Macrocyclic Ynamides."
Zhang, X.; Zhang, Y.; Huang, J.; Hsung, R. P.; Kurtz, K. C. M.; Oppenheimer, J.; Petersen, M. E.; Sagamanova, I. K.; Tracey, M. R. J. Org. Chem. 2006, 71, 4170-4177.

99.    "An Unusual Cationic [2 + 2] Cyclization in a Divergent Total Synthesis of Hongoquercin A and Rhododaurichromanic Acid A."
Kurdyumov, A. V.; Hsung, R. P. J. Am. Chem. Soc. 2006 128, 6272-6273.

98.     "Total Syntheses of (±)-Daldiniapyrone and (±)-Annularin C and F."
Kurdyumov, A. V.; Munoz R. L. P.; Hsung, R. P. Synthesis 2006, 1787-1790.

97.       "Synthesis of Chiral Allenes from Ynamides Through a Highly Stereoselective Saucy-Marbet Rearrangement." [Tetrahedron-Symposium-In-Print on Chemistry of Electron-Deficient Ynamines and Ynamides..]
Kurtz, K. C. M.; Frederick, M. O.; Lambeth, R. H.; Mulder, J. A.; Tracey, M. R.; Hsung, R. P. Tetrahedron 2006, 62, 3928-3938.

96.     "A De Novo Class of Chiral Amino Alcohols for Catalytic Asymmetric Additions to Aldehydes."
Huang, J.; Ianni, J. C.; Antoline, J. E.; Hsung, R. P.; Kozlowski, M. C. Org. Lett. 2006, 8, 1565-1568.

95.       "A Concise Total Synthesis of (-)-Cylindricine C through a Stereoselective Intramolecular Aza-[3 + 3] Annulation Strategy."
Swidorski, J. J.; Wang, J.; Hsung, R. P. Organic Lett. 2006, 8, 777-780.

94.       "A Ring-Closing Yne-Carbonyl Metathesis of Ynamides."
Kurtz, K. C. M.; Hsung, R. P.; Zhang, Y. Organic Lett. 2006, 8, 231-234.

93.       "A Lewis Acid-Catalyzed Formal [3 + 3] Cycloaddition of a,b-Unsaturated Aldehydes with 4-Hydroxy-2-Pyrone, Diketones, and Vinylogous Esters"
Kurdyumov, A. V.; Lin, N.; Hsung, R. P.; Gullickson, G. C.; Cole, K. P.; Sydorenko, N.; Swidorski, J. J. Organic Lett. 2006, 8, 191-193.

2005

92.       "Unique Structural Topology and Reactivities of the ABD Tricycle in Phomactin A."
Cole, K. P.; Hsung, R. P. Chem. Commun. 2005, 61, 5784-5786.

91.       "Copper Catalyzed Stereospecific N-Allenylations of Amides. Syntheses of Optically Enriched Chiral Allenamides."
Shen, L.; Hsung, R. P.; Zhang, Y.; Antoline, J. E.; Zhang, X. Organic Lett. 2005, 7, 3081-3084.

90.       "An Anomeric Control on Remote Stereochemistry in the Synthesis of Spiroketals."
Ghosh, S. K.; Hsung, R. P.; Liu, J. J. Am. Chem. Soc. 2005, 127, 8260-8261.

89.       "Total Syntheses of Enantiomerically Enriched R-(+)- and S-(-)-Deplancheine."
Sydorenko, N.; Zificsak, C. A.; Gerasyuto, A. I.; Hsung, R. P. Organic Biomol. Chem. 2005, 3, 2140-2144.

88.       "A Formal [3 + 3] Cycloaddition Reaction. 5. An Enantioselective Intramolecular Formal Aza-[3 + 3] Cycloaddition Reaction Promoted By Chiral Amine Salts."
Gerasyuto, A. I.; Hsung, R. P.; Sydorenko, N.; Slafer, B. W. J. Org. Chem. 2005, 70, 4248-4256.

87.       "Synthesis of the C11-C23 Fragment of Spirastrellolide A. A Ketal-Tethered RCM Approach to the Construction of Spiroketals."
Liu, J.; Hsung, R. P. Organic Lett. 2005, 7, 2273-2276.

86.       "Syntheses of 2,5-Disubstituted Dihydrofurans from g-Substituted Chiral Allenamides."
Berry, C. R.; Hsung, R. P. Antoline, J. E.; Petersen, M. E.; Rameshkumar, C.; Nielson, J. A. J. Org. Chem. 2005, 70, 4038-4042.

85.       "An N-Acyliminium Approach to a Total Synthesis of (+)-Cylindricine C."
Liu, J.; Swidorski, J. J.; Peter, S. D.; Hsung, R. P. J. Org. Chem. 2005, 70, 3898-3902.

84.       "Bronsted Acid-Catalyzed Highly Stereoselective Arene-Ynamide Cyclizations. A Novel Keteniminium Pictet-Spengler Cyclization in Total Syntheses of (±)-Desbromoarborescidines A and C."
Zhang, Y.; Hsung, R. P.; Zhang, X.; Huang, J.; Slafer, B. W.; Davis, A. Organic Lett. 2005, 7, 1047-1050.

83.       "Highly Regioselective Radical Cyclizations of Allenamides."
Shen, L.; Hsung, R. P. Organic Lett. 2005, 7, 775-778.

82.       "Lewis Acid Catalyzed Highly Enantioselective [4 + 3] Cycloaddition Reactions Using Nitrogen-Stabilized Oxyallyl Cations Derived from Allenamides."
Huang, J.; Hsung, R. P. J. Am. Chem. Soc. 2005, 127, 50-51.

2004

81.       "Total Syntheses of (+)-Cylindricines C-E and (-)-Lepadiformine Via a Common Intermediate Derived from Intramolecular Mannich Cyclization and Wharton's Rearrangement."
Liu, J.; Hsung, R. P.; Peters, S. D. Organic Lett. 2004, 6, 3989-3992.

80.     "Tetronamides as Latent Acyclic Vinylogous Amides in Formal Aza-[3 + 3] Cycloaddition Reactions with a,b-Unsaturated Iminium Salts. An Approach to Synthesis of Highly Substituted Piperidines."
Sydorenko, N.; Hsung R. P.; Darwish, O. S.; Hahn, J. M.; Liu, J. J. Org. Chem. 2004, 69, 6732-6738.

79.       "2-Oxazolidinone, 4-(Diphenylmethyl)-3-(1,2-Propadienyl)-, (4R) and Related Chiral Allenamides."
Tracey, M. R.; Grebbe, T. P.; Brennessel, W. W.; Hsung, R. P. Acta Cryst 2004, C60, o830-o832.

78.       "Sonogashira Cross-Couplings of Ynamides. Synthesis of Urethane and Sulfonamide-Terminated Conjugated Phenylacetylenic Systems."
Tracey, M. R.; Zhang, Y.; Frederick, M. O.; Mulder, J. A, Hsung, R. P. Organic Lett. 2004, 6, 2209-2212.

77.       "Inverse Electron-Demand Aza-[4 + 2] Cycloaddition Reactions of Allenamides."
Berry, C. R.; Hsung, R. P. Tetrahedron 2004, 60, 7629-7636. [Dedicated to Professor Dieter Seebach]

76.       "Ketal Tethered Ring-Closing Metathesis. An Unconventional Approach to Constructing Spiroketals and Total Synthesis of an Insect Pheromone."
Ghosh, S. K.; Hsung, R. P.; Wang, J. Tetrahedron Lett. 2004, 45, 5505-5510.

75.       "Stereoselective Ketal-Tethered Intramolecular Diels-Alder Cycloadditions. An Approach to the 2-Oxadecalin Sprioketal Core of Antifungal Agent Fusidilactone C."
Wang, J.; Hsung, R. P.; Ghosh, S. K. Organic Lett. 2004, 6, 1939-1942.

74.       "Copper Sulfate-1,10-Phenanthroline Catalyzed Amidations of Alkynyl Bromides. Synthesis of Heteroaromatic Amine Substituted Ynamides."
Zhang, Y.; Hsung, R. P.; Tracey, M. R.; Kurtz, K. C. M.; Vera, E. L. Org. Lett. 2004, 6, 1151-1154.

73.       "Allylated b-Ketoesters as Precursors in Paar-Knorr-Type Pyrrole Synthesis. Preparations of Chiral and Bis-Pyrroles."
Tracey, M. R.; Lambeth, R. H.; Hsung, R. P. Synthesis, 2004, 918-922.

72.       "A Novel Tandem Epoxidation - Stereoselective Intramolecular [4 + 3] Cycloaddition Reaction of Nitrogen-Stabilized Oxyallyl Cations Derived from Chiral Allenamides"
Rameshkumar, C.; Hsung, R. P. Angew. Chem., Int. Ed. 2004, 43, 615-618; Angew. Chem. 2004, 116, 625-628.

71.       "Practical Synthesis of Novel Chiral Allenamides.”
Xiong, H,; Tracey, M. R.; Grebe, T. P.; Mulder, J. A.; Hsung, R. P.; Wipf, P.; Smotryski, J. Organic Syn. 2004 [checked by Wipf/Smotryski in 2003], 81, 147-156.

2003

70.       "Intramolecular Formal Oxa-[3 + 3] Cycloaddition Approach to the ABD System of Phomactin A."
Cole, K. P.; Hsung, R. P. Organic Lett. 2003, 5, 4843-4846.

69.       "Pauson-Khand Cycloaddition Reactions of Chiral Ynamides. Observation of An Unusual Endo-Addition with Norbornadiene."
Shen, L.; Hsung, R. P. Tetrahedron Lett. 2003, 44, 9353-9358.

68.       "Intramolecular Formal Aza-[3 + 3] Cycloaddition Approach to Indoloquinolizidine Alkaloids. A Stereoselective Total Synthesis of (±)-Tangutorine."
Luo, S.; Zificsak, C. Z.; Hsung, R. P. Organic Lett. 2003, 5, 4709-4712.

67.       "Stereoselective Intramolecular [4 + 3] Cycloadditions of Nitrogen-Stabilized Chiral Oxyallyl Cations via Epoxidation of N-Tethered Allenamides."
Xiong, H.; Huang, J.; Ghosh, S. K.; Hsung, R. P. J. Am. Chem. Soc. 2003, 125, 12694-12695.

66.       "A Formal [3 + 3] Cycloaddition Approach to Chromenes and Chromanes. Concise Total Syntheses of (±)-Rhododaurichromanic Acids A and B and Methyl (±)-Daurichromenic Ester."
Kurdyumov, A. V.; Hsung, R. P.; Ihlen, K.; Wang, J. Organic Lett. 2003, 5, 3935-3938.

65.       "Highly Stereoselective Saucy-Marbet Rearrangement Using Chiral Ynamides. Synthesis of Highly Substituted Chiral Homoallenyl Alcohols. "
Frederick, M. O.; Hsung, R. P.; Lambeth, R. H.; Mulder, J. A.; Tracey, M. R. Organic Lett. 2003, 5, 2663-2666.

64.       "Pyranyl Heterocycles from Inverse Electron Demand Hetero [4 + 2] Cycloaddition Reactions of Chiral Allenamides as a New Chiral Template for Constructing C-Glycoside Substrates."
Rameshkumar, C.; Hsung, R. P. Synlett 2003, 91, 1241-1246. [An Invited Article for The Special Issue Dedicated to Professor Ray Lemieux.]

63.       "A Highly Stereoselective Synthesis of Novel E-a-Haloenamides via a Mild and Efficient Hydrohalogenation of Ynamides"
Mulder, J. A.; Kurtz, K. C. M.; Hsung, R. P.; Coverdale, H.; Frederick, M. O.; Shen, L.; Zificsak, C. A. Organic Lett. 2003, 5, 1547-1550.

62.       "A Lewis-Acid Mediated Stereoselective Removal of An Anomeric Urea Substituent."
Berry, C. R.; Rameshkumar, C.; Tracey, M. R.; Wei, L.-L.; Hsung, R. P. Synlett 2003, 6, 791-796.

61.       "A Formal [3 + 3] Cycloaddition Reaction.  Improved Reactivity Using a,b-Unsaturated Iminium Salts, Mechanism, and Reversibility of 6p-Electron Electrocyclic Ring-Closure of 1-Oxatrienes.”
Shen, H. C.; Wang, J.; Cole, K. P.; McLaughlin, M. J.; Morgan, C. D.; Douglas, C. J.; Hsung, R. P.; Coverdale, H. A.; Gerasyuto, A. I.; Hahn, J. M.; Liu, J.; Wei, L.-L.; Sklenicka, H. M.; Zehnder, L. R.; Zificsak, C. A. J. Org. Chem. 2003, 68, 1729-1735.

60.       "A Copper Catalyzed C-N Bond Formation Involving sp-Hybridized Carbons.  A Direct Entry to Chiral Ynamides via N-Alkynylation of Amides."
Frederick, M. O.; Mulder, J. A.; Tracey, M. R.; Hsung, R. P.; Huang, J.; Kurtz, K. C. M.; Shen, L.; Douglas, C. J.  J. Am. Chem. Soc. 2003, 125, 2368-2369.

59.       "The Total Synthesis of (±)-Arisugacin A."
Hsung, R. P.; Cole, K. P.; Zehnder, L. R.; Wang, J.; Wei, L. L.; Yang, X.-F.; Coverdale, H. A. Tetrahedron 2003, 59, 311-324.

2002

58.       "The First Enantioselective Total Synthesis of (-)-Arisugacin A."
Cole, K. P.; Hsung, R. P. Tetrahedron Lett. 2002, 43, 8791-8793.

57.       “Stereoselective Formal [3 + 3] Cycloaddition Approach to cis-1-Azadecalins and Synthesis of (-)-4a,8a-diepi-Pumiliotoxin C. Evidence for the First Highly Stereoselective 6p-Electron Electrocyclic Ring Closures of 1-Azatrienes.”
Sklenicka, H. M.; Hsung, R. P.; McLaughlin, M. J.; Wei, L.-l.; Gerasyuto, A. I.; Brennessel, W. B.; J. Am. Chem. Soc. 2002, 124, 10435-10442.

56.       “The First Successful Base-Promoted Isomerization of Propargyl Amides to Chiral Ynamides. Applications in Ring-Closing Metathesis of Ene-Ynamides and Tandem RCM of Diene-Ynamides.”
Huang, J.; Xiong, H.; Hsung, R. P.; Rameshkumar, C.; Mulder, J. A.; Grebe, T. P. Org. Lett. 2002, 4, 2417-2420.    

55.       “Chiral Enamide. Part 1: Epoxidations of Chiral Enamides. A Viable Approach to Chiral Nitrogen Stabilized Oxyallyl Cations in [4 + 3] Cycloadditions.”
Xiong, H.; Hsung R. P.; Shen L.; Hahn J. M. Tetrahedron Lett. 2002, 43, 4449-4453.

54.       “A Novel and Highly Stereoselective Approach to Aza-Spirocycles. A Short Total Synthesis of 2-epi-(±)-Perhydrohistrionicotoxin and an Unprecedented Decarboxylation of 2-Pyrones.”
McLaughlin, M. J.; Hsung, R. P.; Cole, K. P.; Hahn, J. M.; Wang, J. Org. Lett. 2002, 4, 2017-2020.

53.       "The Total Synthesis of (±)-Arisugacin A.”
Cole, K.P.; Hsung, R. P.; Yang, X.-F. Tetrahedron Lett. 2002, 43, 3341-3345.

52.       "An Unexpected Retro-Aldol-Aldol in the AB-ring in the Synthesis of (±)-Arisugacin A.”
Wang, J.; Cole, K. P.; Wei, L. L.; Zehnder, L. R.; Hsung, R. P. Tetrahedron Lett. 2002, 43, 3337-3340.

51.       "The First Stereoselective Ficini-Claisen Rearrangement Using Chiral Ynamides.”
Mulder, J. A.; Hsung, R. P.; Frederick, M. O; Tracey, M. R.; Zificsak, C. A. Org. Lett. 2002, 4, 1383-1386.

50.       "NMR Studies on Epoxidations of Allenamides.  Evidence for Formation of Nitrogen-Substituted Allene Oxide and Spiro-Epoxide via Trapping Experiments "
Rameshkumar, C.; Xiong, H.; Tracey, M. R.; Berry, C. R.; Yao, L. J.; Hsung, R. P. J. Org. Chem. 2002, 67, 1339-1345.

2001

49.       "The First Epoxidations of 1-Amidoallenes.  A General Entry to Nitrogen-Substituted Oxyallyl Cations in Highly Stereoselective [4 + 3] Cycloadditions.”
Xiong, H.; Hsung. R. P.; Berry, C. R.; Rameshkumar, C. J. Am. Chem. Soc. 2001, 123, 7174-7175.

48.       "Stereoselective trans- and cis-Dihydroxylations of 2H-Pyranyl and Dihydropyridinyl Heterocycles Synthesized from Formal [3 + 3]-Cycloaddition Reactions of a,b-Unsaturated IminiumsIons with 1,3-Dicarbonyl Equivalents.”
Zehnder, L. R.; Wei, L.-L.; Hsung, R. P.; Cole, K. P.; McLaughlin, M. J.; Shen, H. C.; Sklenicka, H. M.; Wang, J.; Zificsak, C. A. Org. Lett. 2001, 3, 2141-2144.

47.       "An Unexpected Ring-Opening of a 2-Pyrone Ring at Low Temperatures:  A Mild and Expeditious Synthesis of Novel Coumarins.”
Darwish, O. S.; Granum, K. A.; Tan, Q.; Hsung, R. P. Tetrahedron Lett. 2001, 42, 3283-3286.

46.       "A Novel and Highly Stereoselective Intramolecular Formal [3 + 3] Cycloaddition Reaction of Vinylogous Amides Tethered with a,b-Unsaturated Aldehydes:  A Formal Total Synthesis of (+)-Gephyrotoxin.”
Wei, L.-L.; Hsung, R. P.; Sklenicka, H. M.; Gerasyuto, A. I. Angew. Chem., Int. Ed. 2001, 40, 1516-1518; Angew. Chem. 2001, 113, 1564-1566.

45.       "Total Syntheses of Pyranoquinoline Alkaloids: Simulenoline, Huajiaosimuline, and (±)-7-Demethoxyzanthodioline.”
McLaughlin, M. J.; Hsung, R. P. J. Org.Chem. 2001, 66, 1049-1053.

44.       "Chiral Cycloalkylidene a,b-Unsaturated Iminium Approach to Stereoselective Formal [3 + 3] Cycloaddition Reaction in Spiroheterocycle Synthesis.”
McLaughlin, M. J.; Shen, H. C.; Hsung, R. P. Tetrahedron Lett. 2001, 42, 609-613.

43.       "Efficient Preparations of Novel Ynamides and Allenamides.”
Wei, L.-L.; Mulder, J. A.; Xiong, H.; Zificsak, C. A.; Douglas, C. J.; Hsung, R. P. Tetrahedron 2001, 57, 459-466.

2000[* Collaborative Papers]

42.*     "Molecular Assemblies on Silicon Surfaces via Si-O Linkages.”
Zhu, X. Y.; Boiadjiev,V.; Mulder, J. A.; Hsung, R. P.; Major, R. C. Langmuir 2000, 16, 6766-6772.

41.       "A Concise Stereoselective Route to the Pentacyclic Frameworks of Arisugacin A and Territrem B.”
Zehnder, L. R.; Hsung, R. P.; Wang, J.-S.; Golding, G. M. Angew. Chem., Int. Ed. 2000, 39, 3876-3879; Angew. Chem. 2000, 112, 4034-4037.

40.       "The First Regioselective a-Deprotonation and Functionalization of Allenamides.  An Application in Intramolecular Pauson-Khand-Type Cycloadditions.”
Xiong, H.; Hsung, R. P.; Wei, L.-L.; Berry, C. R.; Mulder, J. A.; Stockwell, B. Org. Lett. 2000, 2, 2869-2871.

39.       "Highly Stereoselective Formal [3 + 3] Cycloaddition Reactions of Chiral Vinylogous Amides Using a,b-Unsaturated Iminiums."
Sklenicka, H. M.; Hsung, R. P.; Wei, L.-L.; McLaughlin, M. J.; Gerasyuto, A. I.; Degen, S. J.; Mulder, J. A. Org. Lett. 2000, 2, 1161-1164.

38.       "Lewis-Acid Mediated Condensation Reactions of a,b-Unsaturated Acids with 4-Hydroxy-2-pyrones.  A Concise Structural Assignment of Fleischmann's a,a-Bispyrone and Praill's a,g-Bispyrone."
Zehnder, L. R.; Dahl, J. W.; Hsung, R. P. Tetrahedron Lett. 2000, 41, 1901-1905.

1999

37.       "The First Stereoselective Inverse Demand [4 + 2] Cycloaddition Reactions of Novel Chiral Allenamides with Heterodienes. Preparations of Highly Functionalized 2-Arylpyranyl Heterocycles."
Wei, L.-L.; Hsung, R. P.; Xiong, H.; Mulder, J. A.; Nkansah, N. T. Org. Lett. 1999, 1, 2145-2148.

36.*     "Adhesion, Deformation, and Friction for Self-Assembled Monolayers on Au and Si Surface.”
Kiely, J. D.; Houston, J. E.; Mulder J. A.; Hsung, R. P.; Zhu, X. Y. Tribology Lett. 1999, 7, 103-107.

35.       "A Rare Acid-Promoted Elimination of O-Methyl Oximes:  A Practical Synthesis of 3-Cyano-4-benzopyrones.”
Hsung R. P.; Zificsak, C. A.; Wei, L.-L.; Zehnder, L. R.; Park, F.; Kim, M.; Tran, T. T.-T. J. Org. Chem. 1999, 64, 8736-8740.

34.       "Synthesisand UV Studies of a Small Library of 6-Aryl-4-hydroxy-2-pyrones.  A Relevant Structural Feature for the Inhibitory Property of Arisugacin Against Acetylcholinesterase.”
Douglas C. J.; Sklenicka, H. M.; Shen, H. C.; Golding, G. M.; Mathias, D. S.; Degen, S. J.; Morgan, C. D.; Shih, R. A.; Mueller, K. L.; Seurer, L. M.; Johnson, E. W.; Hsung, R. P. Tetrahedron 1999, 55, 13683-13696

33.       "Lewis-Acid Promoted Hetero [2 + 2] Cycloaddition Reactions of Aldehydes with 10-Propynyl-9-(10H)-acridone.  A Highly Stereoselective Synthesis of Acrylic Acid Derivatives and 1,3-Dienes Using An Electron Deficient Variant of Ynamine.”
Hsung, R. P.; Zificsak, C. A.; Wei, L.-L.; Douglas, C. J.; Xiong, H.; Mulder, J. A. Org. Lett. 1999, 1, 1237-1240.

32.       "Inverse Demand [4 + 2] Cycloaddition Reactions of Allenamides:  Reactivity Scopes of An Electron Deficient Variant of Allenamines.”
Wei, L.-L.; Xiong, H.; Douglas, C. J.; Hsung, R. P. Tetrahedron Lett. 1999, 40, 6903-6907.

31.       "Formal Cycloaddition Reactions of Vinylogous Amides with a,b-Unsaturated Iminiums.  A Strategy for Constructing Piperidinyl Heterocycles.”
Hsung, R. P.; Wei, L.-L.; Sklenicka, H. M.; Douglas, C. J.; McLaughlin, M. J.;Mulder, J. A.; Yao, L. J. Org. Lett. 1999, 1, 509-512.

30.*     "Integrating Organic Molecules to Silicon Surfaces.”
Zhu, X.-Y.; Mulder, J. A.; Hsung, R. P.; Bergerson, W.; Gasser, A.; Nguyen, A. Mat. Res. Soc. Sym. Proc. 1999, 576, 177-182.

29.       "Synthesis of Dihydroxanthone Derivatives and Evaluation of Their Inhibitory Activity Against Acetylcholinesterase: Unique Structural Analogs of Tacrine Based on the BCD-Ring of Arisugacin.”
Degen, S. J.; Mueller, K. L.; Shen, H. C.; Mulder, J. A.; Golding, G. M.; Wei, L.-L.; Zificsak, C. A.; Neeno-Eckwall, A.; Hsung, R. P. Bioorg. Med. Chem. Lett. 1999, 973-978.

28.       "Sequential 1,2-Addition-Electrocyclic Ring Closure Involving Acyclic a, b-Unsaturated Iminiums: A Formal [3 + 3] Cycloaddition Strategy to Unique Pyranyl Spirocycles.”
Hsung, R. P.; Shen, H. C.; Douglas, C. J.; Morgan, C. D.; Degen, S. J.; Yao, L. J. J. Org. Chem. 1999, 64, 690-691.

27.*     "Assembly of Organic Molecules on Silicon Surfaces via the Si-N Linkages.”
Bergerson, W.; Mulder, J. A.; Hsung, R. P.; Zhu, X.-Y. J. Am. Chem. Soc. 1999, 121, 454-455.

1998

26.       "Reactivity of Hindered 1,1-Dimethylbutadienes Towards a,b-Unsaturated Enones.”
Granum, K. A.; Merkel, G. C.; Mulder, J. A.; Debbins, S. A.; Hsung, R. P. Tetrahedron Lett. 1998, 39, 9597-9600.

25.       "Concentration Effect on the Stereoselectivity of [4 + 2] Cycloaddition Reactions of 3-Cyano-g-benzopyrone Derivatives with Electron Rich Dienes."
Hsung, R. P. Heterocycles 1998, 48, 421-425.

1997

24.       "First Stereoselective [4 + 2] Cycloaddition Reactions of 3-Cyanochromone Derivatives with Electron Rich Dienes: An Approach to the ABC Tricyclic Frame of Arisugacin.”
Hsung, R. P. J. Org.Chem. 1997, 62, 7904-7905.