A palladium catalyzed efficient synthesis of γ-methylene-α,β-unsaturated γ-lactones via cyclization of 3,4-alkadienoic acids
摘要:
An efficient method was developed for the synthesis of gamma-methylene-alpha, beta-unsaturated gamma-lactones from the Pd-catalyzed cyclization of 3,4-alkadienoic acids. Control experiment shows that the reaction should be carried out under a N-2 atmosphere to ensure the high purity of the products. (c) 2005 Elsevier Ltd. All rights reserved.
A palladium catalyzed efficient synthesis of γ-methylene-α,β-unsaturated γ-lactones via cyclization of 3,4-alkadienoic acids
作者:Shengming Ma、Fei Yu
DOI:10.1016/j.tet.2005.06.063
日期:2005.10
An efficient method was developed for the synthesis of gamma-methylene-alpha, beta-unsaturated gamma-lactones from the Pd-catalyzed cyclization of 3,4-alkadienoic acids. Control experiment shows that the reaction should be carried out under a N-2 atmosphere to ensure the high purity of the products. (c) 2005 Elsevier Ltd. All rights reserved.
Preparation and decarboxylation of allenyl acetic acids: a route to substituted buta-1,3-dienes
作者:Jack E. Baldwin、Peter A. R. Bennett、Andrew K. Forrest
DOI:10.1039/c39870000250
日期:——
Propargylic esters undergo the Claisen ester rearrangement to give allenyl acetic acids which thermally decarboxylate to give substituted buta-1,3-dienes.