Hetero-Diels-Alder (HDA) Strategy for the Preparation of 6-Aryl- and Heteroaryl-Substituted Piperidin-2-one Scaffolds: Experimental and Theoretical Studies
Preparation of piperidine-2-one scaffolds by the hetero-Diels–Alder (HAD) reaction, assisted by microwaves, is described. The versatility of this new approach has been demonstrated by the synthesis of racemic (±)-2-phenylpiperidine. Theoretical calculations have allowed us to clarify the factors that govern ring closure to form four-membered rings, arising from a Staudinger-type electrocyclization
描述了在微波辅助下通过异狄尔斯-阿尔德 (HAD) 反应制备哌啶-2-one 支架。这种新方法的多功能性已通过外消旋 (±)-2-苯基哌啶的合成得到证明。理论计算使我们能够阐明控制闭环形成四元环的因素,由施陶丁格型电环化产生,和/或通过经典的 [4+2] HAD 环化产生六元环。正如计算研究所预期的那样,可以通过增加亲二烯体的电子需求来降低这种竞争。
N-Trimethylsilylimines: applications to the syntheses of .beta.-lactams
作者:Deok Chan Ha、David J. Hart、Teng Kuei Yang
DOI:10.1021/ja00329a029
日期:1984.8
Preparation of primary amines and 2-azetidinones via N-(trimethylsilyl)imines
作者:David J. Hart、Kenichi Kanai、Dudley G. Thomas、Teng Kuei Yang
DOI:10.1021/jo00151a002
日期:1983.2
Synthesis of NH -3-phenylsulfanyl- and NH -3-benzylsulfanyl-azetidinones from 1-phenylsulfanyl- or 1-benzylsulfanyl-3-aza-1,3-dienes
The syntheses of NH-3-phenylsulfanyl- and NH-3-benzylsulfanyl-azetidinones, starting from 1-phenylsulfanyl- or 1-benzylsulfanyl-2-trimethylsilyloxy-3-aza-1,3-dienes are reported. (C) 2003 Elsevier Ltd. All rights reserved.
HART, D. J.;KANAI, KEN-ICHI;TOHOMAS, D. G.;YANG, TENG-KUEI, J. ORG. CHEM., 1983, 48, N 3, 289-294
作者:HART, D. J.、KANAI, KEN-ICHI、TOHOMAS, D. G.、YANG, TENG-KUEI