Tetrahedron Letters

Synthesis of (7E, 9Z)-7, 9-dodecadien-1-yl acetate, a sex pheromone of Lobesia botrana

JN Labovitz, CA Henrick, VL Corbin

Index: Labovitz,J.N. et al. Tetrahedron Letters, 1975 , p. 4209 - 4212

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Citation Number: 24

Abstract

catalyst, 5, 6 under condltlons of continuous removal of the methanol-toluene azeotrope. Dlstlllation gave (in 50% yield from acroleln) methyl 4-nonen-6-ynoate (! a), bp 130"(20 mm) Glc analysis of the product showed it to contain an E 2 ratio of ca. 4.1 (cf ref 6)---- The pure E isomer can be readily obtained by distillation of the isomer mixture on a spinning-band column, but such a separation 1s unnecessary at this stage