作者:Henk Moorlag、Johannes G. de Vries、Bernard Kaptein、Hans E. Schoemaker、Johan Kamphuis、Richard M. Kellogg
DOI:10.1002/recl.19921110304
日期:——
Mandelic and lacticacids are converted to the 1,3-dioxolan-4-ones by treatment with acetone dimethyl acetal. Deprotonation followed by treatment with an allyl acetate and a catalytic amount (1 mol %) of palladium catalyst afforded the allylated dioxolanones, which could be hydrolyzed to the corresponding α-allyl α-hydroxy acids. The lithium enolate of the dioxolanone of mandelic acid was also coupled