Convenient Synthesis of 1-(Trimethylsilyl)- and 1-(Trimethylstannyl)Vinylphosphonates and Their Synthetic Application
作者:Yoshiharu Okada、Riho Urushihara、Masato Nakamoto
DOI:10.1080/10426507.2014.978327
日期:2015.6.3
GRAPHICAL ABSTRACT Abstract Dimethyl 1,1-bis(trimethylsilyl)methylphosphonate was succeeded to react with aromatic aldehydes in the presence of methyl benzoate as additive to give the corresponding vinylphosphonates in moderate yields. Michael addition and subsequent Peterson olefination reaction of dimethyl (Z)-2-(3,4-methylenedioxyphenyl)-1-(trimethylsilyl)vinylphosphonate with 3,4,5-trimethoxyphenyllithium
图形摘要摘要 1,1-双(三甲基甲硅烷基)甲基膦酸二甲酯在作为添加剂的苯甲酸甲酯存在下成功地与芳香醛反应,以中等产率得到相应的乙烯基膦酸酯。(Z)-2-(3,4-亚甲二氧基苯基)-1-(三甲基甲硅烷基)乙烯基膦酸二甲酯与3,4,5-三甲氧基苯基锂和巴豆醛的迈克尔加成和随后的彼得森烯化反应得到相应的(2E,4E)-1- (3,4,5-三甲氧基苯基)-1-(3,4-亚甲二氧基苯基)-2-(二甲基膦酰基)六-2,4-二烯,产率为36%。