A Facile Preparation of Amino(diethoxyphosphoryl)acetic Esters: Transformation of Phosphoranes to Phosphonic Esters
作者:Masahiko Seki、Kazuo Matsumoto
DOI:10.1055/s-1996-4271
日期:1996.5
Triethoxyphosphoranes 8, generated in situ by the treatment of oxalylcarbamates 7 with triethyl phosphite, were reacted with bromotrimethylsilane or hydrogen bromide in acetic acid to afford diethyl phosphonates 9 in high yields. These were readily converted into amino(diethoxyphosphoryl)acetic esters 10 by hydrogenation.
三乙氧基膦 8 是通过将草酰基氨基酸酯 7 用三乙基膦酸酯处理生成的,随后与溴化三甲基硅烷或氢溴酸在醋酸中反应,获得了产率很高的二乙基膦酸酯 9。这些二乙基膦酸酯可以通过氢化反应方便地转化为氨基(二乙氧基膦酸基)乙酸酯 10。