公开(公告)号：EP0117337A1

公开(公告)日：1984-09-05

申请号：EP83306353.0

申请日：1983-10-19

Applicant: STAUFFER CHEMICAL COMPANY

Inventor： Broadhurst, Michael David ,  ByranHeather, James

IPC: C07F9/38

CPC classification number: C07F9/3813

Abstract: A process for the preparation of sulfonium or sulfoxonium salts of N-phosphonomethylglycine which comprises:

(1) reacting N-phosphonomethylglycine, a compound of the formula

with a compound selected from the group consisting of those having the formula
wherein R 1 , R 2 and R 3 are the same or different and are alkyl groups having from 1 to 4 carbon atoms or aromatic alkyl groups, X is chloride, bromide or iodide and Z is an electron pair or oxygen, or
wherein R" R 2 and R 3 are the same of different and are alkyl groups having from 1 to 4 carbon atoms and are the same as in (a) above, R 4 is an alkyl group having from 1 to 12 carbon atoms, aromatic or aromatic alkyl groups, X is chlorine or iodine, and Y is nitrogen or phosphorus, said reaction being conducted in the presence of a trialkylamine of the formula
wherein each R is the same or different and is an alkyl group ranging from 4 to 13 carbon atoms, all in the presence of water and a polar functional organic solvent which is immiscible in water, said reaction being conducted at a temperature and for a sufficient period of time to cause completion of the reaction, and

(2) isolating the end product by phase separation.

The process is simpler and less expensive than other processes.

公开(公告)号：EP0117337B1

公开(公告)日：1988-09-07

申请号：EP83306353.0

申请日：1983-10-19

Applicant: STAUFFER CHEMICAL COMPANY

Inventor： Broadhurst, Michael David ,  ByranHeather, James

IPC: C07F9/38

CPC classification number: C07F9/3813