Nakamura Group

157. One-Pot Synthesis of Pyrroles through Carbometalation Reaction of Zincated Hydrazone with Vinylstannane, M. Nakamura, K. Hara, G. Sakata, and E. Nakamura, Org. Lett., 1, 1505-1507 (1999).

156. [3 + 2] Cycloaddition of Allylic Silane with N-Chloro-sulfonyl Isocyanate, M. Isaka, P. G. Williard, and E. Nakamura, Bull. Chem. Soc. Jpn., 72, 2115-2116 (1999).

155. Macrocarbocycle Synthesis by Copper- and Silver-mediated Cyclization of Tethered Cyclopropenone Acetals. Electronic Tuning of Metal Vinylcarbene Complex into Vinylmetallic Species, Y. Yu, M. Yamanaka, and E. Nakamura, Org. Lett., 1, 407−410 (1999).

154. Ligand Transfer Selectivity in Conjugate Addition of Mixed Organocuprate Bearing a Dummy Ligand, E. Nakamura and M. Yamanaka, J. Am. Chem. Soc., 121, 8941-8942 (1999).

153. Density Functional Studies on Gaudemar/Normant Coupling between Allylzinc and Vinyl Grignard Reagent, A. Hirai, M. Nakamura, and E. Nakamura, J. Am. Chem. Soc., 121, 8665-8666 (1999).

152. Thermal Hetero [3 + 2] Cycloaddition of Dipolar Trimethylenemethane to N-Sulfonyl and N-Acyl Imines. Synthesis of γ-Amino Acid Derivatives, S. Yamago, M. Yanagawa, and E. Nakamura, Chem. Lett., 879-880 (1999).

151. Cycloaddition Reactions of Trimethylenemethane Radical Cation Generated from Methylenecyclopropanone Thioacetal, M. Nakamura, M. Toganoh, H. Ohara, and E. Nakamura, Org. Lett., 1, 7-10 (1999).

150. Correlation of Coordination Geometry of Copper Atom to Reactivities of Organocuprate. Molecular Orbital Analysis of Dimethylcuprate Anion, S. Mori and E. Nakamura, Tetrahedron Lett., 40, 5319-5322 (1999).

149. Optical Resolution of Chirally Functionalized [60]Fullerene through Formation of Diastereomeric Methoxyphenylacetic Acid Esters, H. Isobe, M. Sawamura, and E. Nakamura, Fullerene Sci. Technol., 7, 519-528 (1999).

148. Density Functional Studies on Conjugate Addition of (Me₂CuLi)₂ to Cyclohexenone, S. Mori and E. Nakamura, Chem. Eur. J., 5, 1534-1543 (1999).

147. Theoretical Studies on π-Complex Formation of Organocopper Compounds with Acetylene, S. Mori, and E. Nakamura, J. Mol. Struct. (Theochem, Morokuma Special Issue), 461-462, 167-175 (1999).

146. Synthesis and Cysteine Proteinase Inhibitory Activity of Novel Cyclopropenone Derivatives, R. Ando, T. Sakaki, Y. Morinaka, C. Takahashi, Y. Tamao, N. Yoshii, S. Katayama, K. Saito, H. Tokuyama, M. Isaka, and E. Nakamura, Bioorg. Med. Chem., Symposia-in-Print, 7, 571-579 (1999).

145. Olefin Carbometalation with (Alkoxy)allylic Lithium and Zinc Reagents. Four-centered vs. Six-centered Mechanism of Allylmetalation Reaction, K. Kubota, S. Mori, M. Nakamura, and E. Nakamura, J. Am. Chem. Soc., 120, 13334-13341 (1998).

144. Theoretical Studies on Cyclopropanation Reaction with Lithium and Zinc Carbenoids, A. Hirai, M. Nakamura, and E. Nakamura, Chem. Lett., 927-928 (1998).

143. Synthesis of π-Indenyl-type Fullerene Ligand and Its Metal Complexes via Quantitative Trisarylation of C₇₀, M. Sawamura, H. Iikura, A. Hirai, and E. Nakamura, J. Am. Chem. Soc., 120, 8285-8286 (1998).

142. Theoretical Studies on S_N2-Reaction of MeBr with Me₂CuLi•LiCl Cluster. Solvent and Cluster Effects on the Oxidative Addition/Reductive Elimination Pathway, E. Nakamura, S. Mori and K. Morokuma, J. Am. Chem. Soc., 120, 8273-8274 (1998).

141. Asymmetric Addition of Allylzinc Reagent to Alkynyl Ketones, M. Nakamura, A Hirai, M. Sogi, and E. Nakamura, J. Am. Chem. Soc., 120, 5846-5847 (1998).

140. Theoretical Studies on Lewis Acid Acceleration in Simmons-Smith Reaction, E. Nakamura, A. Hirai, and M. Nakamura, J. Am. Chem. Soc., 120, 5844-5845 (1998).

139. Thermal Hetero [3 + 2] Cycloaddition of Dipolar Trimethylenemethane to O-Alkyloximes. Straightforward Synthetic Route to Substituted Pyrrolidines and Prolines, S. Yamago, M. Nakamura X. Q. Wang, M. Yanagawa, S. Tokumitsu, and E. Nakamura, J. Org. Chem., 63, 1694-1703 (1998).

138. The Olefinic Aldol Reaction. Intramolecular Cyclization Forming Five- and Six-membered Rings, E. Nakamura, G. Sakata, and K. Kubota, Tetrahedron Lett., 39, 2157-2158 (1998).

137. S_N2 Substitution on sp² Nitrogen of Protonated Oxime, S. Mori, K. Uchiyama, U. Hayashi, K. Narasaka, and E. Nakamura, Chem. Lett., 111-112 (1998).

136. Open Dimer Participation in Chelation Controlled Addition of Methyllithium Dimer to α- and β-Alkoxy Aldehydes, S. Mori, B. H. Kim, M. Nakamura, and E. Nakamura, Chem. Lett., 1079-1080 (1997).

135. The Olefinic Aldol Reaction. Addition of Zincated Hydrazone to Vinylsilane E. Nakamura and K. Kubota, Tetrahedron Lett., 38, 7099-7102 (1997).

134. Addition of Aza-enolate to Simple Unactivated Olefin, K. Kubota and E. Nakamura, Angew. Chem. Int. Ed. Engl., 36, 2491-2493 (1997).

133. Endohedral Homo-conjugation in Cyclopentadiene Embedded in C₆₀, H. Iikura, S. Mori, M. Sawamura, and E. Nakamura, J. Org. Chem., 62, 7912-7913 (1997).

132. Sonochemical, Aerobic Conversion of Alkyl Halides into Alcohols Promoted by Trialkyltin Halide/NaBH₃CN Catalytic System, M. Sawamura, Y. Kawaguchi, K. Sato, and E. Nakamura, Chem. Lett., 705-706 (1997).

131. Synthetic and Computational Studies on Symmetry-Defined Double Cycloaddition of A New Tris-Annulating Reagent to C₆₀, H. Isobe, H. Tokuyama, M. Sawamura, and E. Nakamura, J. Org. Chem., 62, 5034-5041 (1997).

130. Addition of Zincated Hydrazone with Vinyl Grignard Reagent. Ketone Synthesis by Four-Component Coupling, E. Nakamura, K. Kubota, and G. Sakata, J. Am. Chem. Soc., 119, 5457-5458 (1997).

129. Reaction Pathway of Conjugate Addition of Lithium Organocuprate Clusters to Acrolein, E. Nakamura, S. Mori, and K. Morokuma, J. Am. Chem. Soc., 119, 4900-4910 (1997).

128. Theoretical Studies on the Addition of Polymetallic Lithium Organocuprate Clusters to Acetylene. Cooperative Effects of Metals in A Trap-and-Bite Reaction Pathway, E. Nakamura, S. Mori, M. Nakamura, and K. Morokuma, J. Am. Chem. Soc., 119, 4887-4899 (1997).

127. Conversion of Alkyl Halides into Alcohols Using a Near Stoichiometric Amount of Molecular Oxygen: An Efficient Route to 18O- and 17O-Labeled Alcohols, M. Sawamura, Y. Kawaguchi, and E. Nakamura, Synlett, 801-802 (1997).

126. Carbometalation of Cyclopropene. Diastereoselective cis-Addition of Zincated Amides, Esters and Hydrazones, E. Nakamura and K. Kubota, J. Org. Chem., 62, 792-793 (1997).

125. Unusually Stable Organomercury Hydrides and Radicals, E. Nakamura, Y. Yu, S. Mori, and S. Yamago, Angew. Chem. Int. Ed. Engl., 36, 374-376 (1997).

124. The First Pentahapto Fullerene Metal Complexes, M. Sawamura, H. Iikura, and E. Nakamura, J. Am. Chem. Soc., 118, 12850-12851 (1996).

123. Double Hydroxylation Reaction for Construction of the Corticoid Side Chain: 16a-Methylcortexolone (pregn-4-ene-3,20-dione, 17,21-dihydroxy-16-methyl-, (16a)-(±)-), Y. Horiguchi, E. Nakamura, and I. Kuwajima, Org. Synth., 73, 123-133 (1996).

122. Synthesis of Dimethyleneketene Acetals and Their [2 + 2] Cycloaddition to Olefins and [60]Fullerene as Cyclopropanecarboxylate Synthons. S. Yamago, A. Takeichi, and E. Nakamura, Synthesis, 1380-1388 (1996).

121. Allylzincation of Z-Aldimines. Enantioselective Allylzincation of Z-Aldimines in the Presence of Anionic Bis-oxazoline. M. Nakamura, A. Hirai, and E. Nakamura, J. Am. Chem. Soc., 118, 8489-8490 (1996).

120. Biological Activity of Water-Soluble Fullerenes. Structural Dependence of DNA Cleavage, Cytotoxicity and Enzyme Inhibitory Activities, E. Nakamura, H. Tokuyama, S. Yamago, T. Shiraki,and Y. Sugiura, Bull. Soc. Chem. Jpn., 69, 2143-2151 (1996).

119. Regio- and Diastereo-Controlled Double Cycloaddition to [60]Fullerene : One Step Synthesis of C_S and C₂ Chiral Organofullerenes with New Tris-Annulating Reagents, E. Nakamura, H. Isobe, H. Tokuyama, and M. Sawamura, Chem. Commun., 1747-1748 (1996).

118. Structure of Fullerene Anchored by Five-Membered Ring, H. Amano, H. Uekusa, Y. Ohashi, H. Tokuyama, and E. Nakamura, Mol. Cryst. Liq. Cryst., 276, 291-294 (1996).

117. Cycloaddition of Dipolar Trimethylenemethane to C₇₀ Promoted by a Trace Amount of Water, S. Yamago and E. Nakamura, Chem. Lett., 395-396 (1996).

116. Photocytotoxicity of Water-soluble Fullerene Derivatives. K. Irie, Y. Nakamura, H. Ohigashi, H. Tokuyama, S. Yamago, and E. Nakamura,Biosci. Biotech. Biochem., 60, 1359-1361 (1996).

115. Tertiary Phosphines, P-Chiral Phosphinites and Phosphonic Acid Esters Bearing Fullerene Substituent. Metal Complexes and Redox Properties, S. Yamago, M. Yanagawa, H. Mukai, and E. Nakamura, Tetrahedron, 52, 5091-5102 (1996).

114. Sonochemical and Triethylborane-Induced Tin Deuteride Reduction for the Highly Diastereoselective Synthesis of (2’R)-2′-Deoxy[2′-2H]ribonucleoisde Derivatives, E. Kawashima, Y. Aoyama, T. Sekine, M. Miyahara, M. F. Radwan, E. Nakamura, M. Kainosho, Y. Kyogoku, and Y. Ishido, J. Org. Chem., 60, 6980-6986 (1995).

113. cis- and trans-Dimethyl Spiro[(4′,4′-dimethyl-2′,6′-dioxacyclohexane)-1’3-(4-methylenebicyclo[3.3.0]octane)]-2,2-dicarboxylate, T. Yamada, H. Uekusa, Y. Ohashi, S. Yamago, X. Q. Wang, and E. Nakamura, Acta Cryst., C51, 1137-1139 (1995).

112. A Concise Synthetic Route to Cyclopentenes by [3 + 2] Cycloaddition of Dipolar Trimethylenemethane to Acetylenes, S. Yamago, S. Ejiri and E. Nakamura, Angew. Chem. Int. Ed. Engl., 34, 2154-2156 (1995).

111. In vivo Biological Behavior of Water-Miscible Fullerenes. ¹⁴C-Labeling, Absorption, Distribution, Excretion and Acute Toxicity, S. Yamago,H. Tokuyama, E. Nakamura, K. Kikuchi, S. Kananishi, K. Sueki,H. Nakahara, S. Enomoto, and F. Ambe, Chem. Biol., 2, 385-389 (1995).

110. Carbometalation of Cyclopropenes. Stereoselective Synthsis of Divinylketones via 1,5-Hydrogen Migration of Vinylcyclopropanes, K. Kubota, M. Isaka, and E. Nakamura, Heterocycles, 42, 565-575 (1996).

109. Sonochemical Synthesis of Alkyl Hydroperoxide by Aerobic Reductive Oxygenation of Alkyl Halide, E. Nakamura, K. -i. Sato, and Y. Imanishi, Synlett, 525-526 (1995).

108. Synthesis of Cyclopropenone-Containing Enzyme Inhibitor. Addition of Cyclopropenyl Cerium Reagent to α-Amino Aldehyde, H. Tokuyama, M. Isaka, and E. Nakamura, Synth. Commun., 25, 2005-2012 (1995).

107. Theoretical Studies on Chelation Controlled Carbonyl Addition. Me₂Mg Addition to α and β-Alkoxy Ketones and Aldehydes, S. Mori, M. Nakamura, E. Nakamura, N. Koga, and K. Morokuma, J. Am. Chem. Soc., 117, 5055-5065 (1995).

106. Langmuir-Blodgett Film of Amphiphilic C₆₀ Carboxylic Acid. M. Matsumoto, H. Tachibana, R. Azumi, M. Tanaka, T. Nakamura, G. Yunome, M. Abe, S. Yamago, and E. Nakamura, Langmuir, 11, 660-665 (1995).

105. Methano- and Propanofullerenes by [1 + 2] and [3 + 2] Cycloadditions of Vinylcarbene Species, H. Tokuyama, H. Isobe, and E. Nakamura, Bull. Chem. Soc. Jpn., 68, 935-941 (1995).

104. Carbometalation of Cyclopropene. Ligand-Induced Enantioselective Allylzincation, M. Nakamura, M. Arai, and E. Nakamura, J. Am. Chem. Soc., 117, 1179-1180 (1995).