Alkylation of ethyl bromomalonate by alkylcobaloximes

M Veber, KNV Duong, F Gaudemer…

Index: Veber,M. et al. Journal of Organometallic Chemistry, 1979 , vol. 177, p. 231 - 237

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Citation Number: 20

Abstract

Abstract Allylcobaloximes react under very mild conditions with ethyl bromomalonate to yield allyl-substituted ethylmalonates in good yield. In the case of crotyl-, 3, 3 dimethyl, allyl-and cinnamyl-cobaloximes, the substitution occurs with total rearrangement of the allyl groups. Similar rearrangements are observed during the reactions of propargyl-and allenylcobaloximes with BrCH (CO 2 Et) 2 yielding allenyl-and propargyl-malonic esters ...