METHYL CYCLOPROPENE-3-CARBOXYLATES BY DIRECT CATALYTIC CYCLOPROPENATION OF ACETYLENES WITH METHYL DIAZOACETATE

EA Shapiro, AV Kalinin, OM Nefedov

Index: Shapiro, E. A.; Kalinin, A. V.; Nefedov, O. M. Organic Preparations and Procedures International, 1992 , vol. 24, # 5 p. 517 - 520

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Citation Number: 9

Abstract

Cyclopropene-3-carboxylates are promising reagents for organic synthesis.'The simplest way for their preparation is rhodium (I1) acetate-promoted cyclopropenation of corresponding alkynes with akyl diazoacetates. 2 Nevertheless, there is no information about the use this method for preparation of the first members of the homologous family of cyclopropene-3carboxylates, eg methyl cycle propene-3-carboxylate (la) and methyl I- ...