SYNTHESIS OF ALPHA-FLUOROKETONES BASED ON PALLADIUM-CATALYZED DECARBOXYLATION REACTIONS OF ALLYL BETA-KETO CARBOXYLATES

被引:23
|
作者
SHIMIZU, I
ISHII, H
机构
[1] Department of Applied Chemisty, School of Science and Engineering, Waseda University, Tokyo, 169
关键词
D O I
10.1016/S0040-4020(01)80770-5
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Fluorination of allyl beta-keto carboxylates using N-fluoro-2,4,6-pyridinium triflate gave allyl a-fluoro-a-keto carboxylates. Reaction of allyl alpha-fluoro-beta-keto carboxylates with formic acid in the presence of palladium-phosphine catalyst gave alpha-fluoro ketones. When the palladium-catalyzed reaction was carried out without formic acid, the decarboxylation-allylation took place to give alpha-fluoro-allylketones. Decarboxylation-dehydrogenation to afford alpha-fluoro-alpha,beta-unsaturated ketones was carried out with palladium catalysts in acetonitrile.
引用
收藏
页码:487 / 495
页数:9
相关论文
共 50 条