Design and synthesis of (E)-4-((3-ethyl-2,4,4-trimethylcyclohex-2-enylidene)methyl)benzoic acid
作者:Bhaskar C. Das、George W. Kabalka
DOI:10.1016/j.tetlet.2008.05.136
日期:2008.8
(E)-4-((3-Ethyl-2,4,4-trimethylcyclohex-2-enylidene)methyl)benzoic acid, 6, was synthesized in 87% starting from beta-cyclocitral. The target compound 6 was synthesized starting from 1 via a Grignard reaction to form alcohol 2. Compound 2 was converted to Wittig salt 3 by treatment with aldehyde 4 in butyllithium and hexane at -78 degrees C to form ester 5. Ester 5 was saponified and, following acidification, acid 6 was isolated as white solid yield 87%. Published by Elsevier Ltd.
顺式-4-((3-乙基-2、4、4-三甲基环己二烯基甲基)的苯酸,编号为 6,从β-环丙醇 1 开始,产率 87% 得到。目标化合物 6 从化合物 1 经过 Grignard 反应生成醇 2。化合物 2 被转化为 Wittig 盐 3,使用甲醇 4 与 butyllithium 和 hexane,在 -78℃ 时反应生成酸酐 5。酸酐 5 被水解,随后经过酸化处理,最终获得了产物 6,编号为白色固体,产率 87%。发表于 Elsevier 出版社。