Synthesis of esters of acetylenic alcohols

Details Synthesis of esters of acetylenic alcohols Synthesis of esters of acetylenic alcohols

1975-10-16

1978-11-14

Garner, Vivian

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

560 8, 560105, 560106, 560113, 560242, 560249, 560261, 568813, 568814, 568873, 568875, 568877, 568902, 568903, C07C 2900, C07C 6728

Patent

active

041257359

ABSTRACT:
A process for the synthesis of perfume products, Vitamin E and intermediates described herein involving a coupling reaction. For instance, a process for the synthesis of dehydrophytol and Vitamin E comprising forming a C.sub.15 acetylene from hexahydropseudoionone and then coupling said acetylene with 1-acetoxy-4-chloro-3-methylbut-2-ene to form a C.sub.20 acetoxy-enyne. The latter is readily subjected to partial hydrogenation and saponification in that order to form a dehydrophytol, a useful intermediate for the synthesis of Vitamin E and other products.

REFERENCES:
patent: 3949006 (1976-04-01), Oroshnik

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