Hydroformylation–Amidocarbonylation of Methylvinylphosphinate. Application to Synthesis of Glufosinate
作者:Toshiyasu Sakakura、Xin-Yan Huang、Masato Tanaka
DOI:10.1246/bcsj.64.1707
日期:1991.5
Glufosinate, 2-amino-4-[(hydroxy)methylphosphinyl]butanoic acid, (2a) was synthesized from 2-chloroethyl methylvinylphosphinate (1a) via successive hydroformylation–amidocarbonylation. Hydroformylation of 1a catalyzed by Co2(CO)8 in methanol gave 2-chloroethyl (3,3-dimethoxypropyl)methylphosphinate (5). Crude 5 was subjected to cobaltcatalyzed amidocarbonylation to afford N-acylglufosinic acid methyl ester (2b). Hydrolysis of 2b under acidic conditions gave 2a quantitatively.