Tetrahedron

Condensation des dérivés dihalogénés sur l'acétone-1, 3 diphosphorane. Nouvelle voie d'accès aux cycloalkycétones et aux δ-dicétones

A Hercouet, M Le Corre

Index: Hercouet,A.; le Corre,M. Tetrahedron, 1977 , vol. 33, p. 33 - 37

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Citation Number: 3

Abstract

Reaction of aliphatic halides BrCH2-(CH2) n-CH2Br (n= 0, 2, 3) and α, α'-dibromo o-xylene with acetone-1, 3 diphosphorane gives, after hydrolysis, cyclopropyl, cyclopentyl, cyclohexyl, and indanyl-carbonylmethýlenètriphénylphosphoranes; cycloalkylcetones are obtained from these ylides by Wittig reaction or hydrolysis. Condensation of di-iodomethane leads to δ- diketonic compounds.