Reactions of esters with phosphorus ylides. 3. Direct conversion into branched olefins

AP Uijttewaal, FL Jonkers…

Index: Uijttewaal,A.P. et al. Journal of Organic Chemistry, 1979 , vol. 44, p. 3157 - 3168

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Citation Number: 29

Abstract

Aromatic and aliphatic esters can be directly converted into the corresponding isopropenyl compounds by reaction with methylenetriphenylphosphorane. In the case of aliphatic esters" salt-free''conditions are required to effect selective conversions. Reaction with other n- alkylidenetriphenylphosphoranes likewise affords the corresponding branched olefins as mixtures of E and 2 isomers. a-Branched or stabilized phosphoranes do not react in this ...

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