Abstract
A reaction of arylidene Meldrum's acids with difluoro(trimethylsilyl)methylzinc bromide in the presence of copper cyanide (10 mol%) is described. The primary addition products are hydrolized and decarboxylated followed by esterification of intermediate carboxylic acids affording β-Me3SiCF2-substituted esters. Protodesilylation of Me3SiCF2-group can be performed under mild conditions affording CHF2-fragment.
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