The application of (Z)-3-aryl-3-haloenoic acids to the synthesis of (Z)-5-benzylidene-4-arylpyrrol-2(5H)-ones
摘要:
Studies directed at the synthesis of (Z)-5-benzylidene-4-arylpyrrol-2(5H)-ones from (Z)-3-aryl-3-haloenoic acids are described The successful strategy relies on the preparation of (Z)-3-aryl-3-haloenoic acids from acetophenones through the corresponding (Z)-3-aryl-3-haloenals and the conversion of the (Z)-3-aryl-3-haloenoic acids to (Z)-5-benzylidene-4-aryl-5H-furan-2-ones The furanones were subsequently treated with primary amines and dehydrated to the corresponding (Z)-5-benzylidene-4-arylpyrrol-2(5H)-one (C) 2010 Elsevier Ltd All rights reserved
Synthesis and stereochemistry of β-aryl-β-haloacroleins: useful intermediates for the preparation of (Z ) and (E )-2-en-4-ynecarbaldehydes and for the synthesis of rubrolides
作者:Damien Prim、Alexia Fuss、Gilbert Kirsch、Artur M. S. Silva
DOI:10.1039/a900286c
日期:——
The synthesis of α-substituted β-aryl-β-haloacroleins by two different pathways is presented. The determination of their stereochemistry by NOE experiments is reported for the first time. Furthermore, we describe the preparation of 2-en-4-ynecarbaldehydes and access to rubrolide derivatives from β-aryl-β-haloacroleins.