Method for preparation of n-phosphonomethylglycine
Номер патента: CA1205487A
Опубликовано: 03-06-1986
Автор(ы): N. Subramanian
Принадлежит: Stauffer Chemical Co
Опубликовано: 03-06-1986
Автор(ы): N. Subramanian
Принадлежит: Stauffer Chemical Co
Реферат: METHOD FOR PREPARATION OF N-PHOSPHONOMETHYLGLYCINE Abstract of the Disclosure A method for the production of N-phosphonomethylglycine is dis-closed which comprises the steps of: (a) reacting formaldehyde with formamide at a pH of 9-10 to form N-(hydroxymethyl)formamide, (b) reacting N-(hydroxymethyl)formamide with triethylphosphite to form diethyl, N-(formyl)aminomethylphosphonate, (c) reacting diethyl, N-(formyl)aminomethylphosphonate with methylchloroacetate to form N-(diethylphosphonomethyl), N-(formyl)glycine-methyl ester, and (d) reacting N-(diethylphosphonomethyl), N-(formyl)glycine-methyl ester with hydrochloric acid to form N-phosphonomethylglycine.
Method for preparation of n-phosphonomethylglycine
Номер патента: CA1205488A. Автор: Raymond A. Felix. Владелец: Stauffer Chemical Co. Дата публикации: 1986-06-03.