CONSTRUCTION OF ALPHA-ALKYLIDENE-GAMMA-BUTYROLACTONES FROM ACYCLIC ESTER PRECURSORS

被引:22
作者
LU, XY
MA, SM
JI, JG
ZHU, GX
JIANG, HF
机构
[1] Shanghai Institute of Organic Chemistry, Academia Sinica, 345 Lingling Lu
基金
中国国家自然科学基金;
关键词
D O I
10.1351/pac199466071501
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Divalent palladium catalyzed cyclization of allylic alkynoates were studied. Alpha-Alkylidene-gamma-butyrolactones were produced highly regio- and stereoselectively. Controlling factors on the stereochemistry of exocyclic double bonds and beta,gamma-substituents were carefully studied. Bicyclic alpha-alkylidene-gamma-lactones were also synthesized using this method. A convenient and potentially useful methodology is provided for the synthesis of natural products.
引用
收藏
页码:1501 / 1508
页数:8
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