Alkynyl halide compounds and alkenyl acetate compounds therefrom
申请人:Shin-Etsu Chemical Co., Ltd.
公开号:EP0040829A2
公开(公告)日:1981-12-02
The invention provides a novel method for the synthetic preparation of an ω-haloalkyne compound of the general formula R-C-C≡C(̵CH2)̵n-X, in which X is a halogen atom, R is a monovalent hydrocarbon group and n is 4, 5 or 6, by the coupling reaction of a Grignard reagent RMgX' and an ω-halo-1-bromoalkyne compound of the formula X(̵CH2)̵n-C≡C-Br. The ω-haloalkyne compound obtained in the above can be readily converted to the corresponding alkenyl acetate of the formula R-CH=CH(̵ CH2+n-OCOCH3 by first acetylating and then partially hydrogenating in the presence of a Lindlar catalyst. In particular, 7, 11-hexadecadienyl acetate, which is a sexual pheromone compound of a noxious insect, is obtained in the same route of synthesis starting with the Grignard reagent of a 1-halo-3-octene and 1- 8-dibromo-1-octyne.
A Concise Li/liq. NH<sub>3</sub>Mediated Synthesis of (4E,10Z)-Tetradeca-4,10-dienyl Acetate: The Major Sex Pheromone of Apple Leafminer Moth, Phyllonorycter ringoniella
본 발명은 사과굴나방(apple leaf miner moth, Phyllonorycter ringoniella)을 방제하기 위하여 사과굴나방의 성페로몬을 제조하는 방법에 관한 것으로, 보다 상세하게는 사과굴나방의 성페로몬의 주성분인 (4E, 10Z)-테트라데카디에닐아세테이트((4E, 10Z)-tetradecadienylacetate)을 저렴한 출발물질로부터 효율적이고 간단하게 경제적이면서 우수한 순도와 수율로 제조하는 방법에 관한 것이다.