TRANSITION-METAL-CATALYZED DIMERIZATION OF ALLENYL KETONES

被引：154
|
作者：
HASHMI, ASK
机构：
[1] Institut für Organische Chemie der Freien Universität, Berlin, D-14195
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH | 1995年 / 34卷 / 15期
关键词：
ALLENES; FURANS; PALLADIUM COMPOUNDS;
D O I：
10.1002/anie.199515811
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Astounding regioselectivity and good yields of the 2,4‐disubstituted furans 2 are obtained by the Pd‐catalyzed cycloisomerization/dimerization of readily accessible terminal allenyl ketones 1 (R = alkyl, aryl). Compounds 2 are formed exclusively with an (E)‐configurated trisubstituted double bond at C4. Remarkably, the allenyl ketones 1 with R = α‐haloalkyl and iodoaryl react smoothly to give 2. (Figure Presented.) Copyright © 1995 by VCH Verlagsgesellschaft mbH, Germany
引用
收藏
页码：1581 / 1583
页数：3
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