Chelated [3,3]-rearrangements of difluor
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M.J. Broadhurst; J.M. Percy; M.E. Prime
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Article
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1997
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Elsevier Science
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French
โ 216 KB
Whereas the lithium enolates of acetate and propionate esters of difluoroallylic alcohols fragment rapidly, even at -78 ยฐC, methoxy-and benzyloxy-acetates form chelated enolates which undergo smooth [3,3]-rearrangement as their silyl ketene acetals. The latent ketone function can be revealed under m