Synthesis of α-fluoroketones based on palladium-catalyzed Decar☐ylation reactions of allyl β-keto car☐ylates
作者:Isao Shimizu、Hirotoshi Ishii
DOI:10.1016/s0040-4020(01)80770-5
日期:1994.1
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.