A Large Scale Preparation of 1-Ethynylcyclopentene and 1-Hexen-4-yne

E Davin, M Giongo, M Riocci

Index: Davini, Enrico; Giongo, Matteo; Riocci, Mario Organic Preparations and Procedures International, 1995 , vol. 27, # 5 p. 586 - 590

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Citation Number: 4

Abstract

Recently we have been interested in a safe and convenient large scale syntheses of 1- ethynylcyclopentene (3), 1-hexen-4-yne (6) and 1-hexen-3-yne (9), to be utilized in long term storage safety tests. A literature search disclosed a synthesis of 31, 2 and two procedures of related enyne compounds on a 10-15 g. scale (0.1-0.2 mole^),^.^ no reliable syntheses of 6 and 9 were found. Compounds 3 and 6 have been now efficiently obtained ...