The synthesis of chiral 5-methylene pyrrol-2(5H)-ones via photooxygenation of homochiral 2-methylpyrrole derivatives
摘要:
Homochiral 2-methylpyrrole derivatives are synthesized in high yields starting from chiral amines, amino alcohols and amino acid esters. The photooxygenation of these pyrrole derivatives in the presence of a photosensitiser furnishes the corresponding alpha,beta,gamma,delta-unsaturated gamma-lactams as the major products in good yields. (C) 2002 Elsevier Science Ltd. All rights reserved.
Conversion of homochiral amines, β-amino alcohols and α-amino acids to their chiral 2-methylpyrrole derivatives
摘要:
5-Chloro-3-penten-2-one reacts with the amino group of homochiral amines, amino alcohols, amino acid esters to form corresponding 2-pyrrole derivatives in good yield and without racemization. (C) 1997 Elsevier Science Ltd.
Synthesis and photooxygenation of homochiral 2-methylpyrrole derivatives of chiral amino alcohols: simple, selective access to chiral bicyclic lactams
作者:Feray Aydogan、Ayhan S. Demir
DOI:10.1016/j.tetasy.2003.11.011
日期:2004.1
Homochiral 2-methylpyrrole derivatives are synthesized in high yields starting from chiral amino alcohols and 5-chloro-3-pentene-2-one. The photooxygenation of these compounds in the presence of a photosynthesizer furnishes the pyrrolooxazolone structures in high diastereoselectivities. In all of the examples, trans-isomers are formed as the major products. (C) 2003 Elsevier Ltd. All rights reserved.