公开(公告)号：EP0102694B1

公开(公告)日：1987-09-09

申请号：EP83303561.1

申请日：1983-06-21

Applicant: STAUFFER CHEMICAL COMPANY

Inventor： Wong, Rayman Young ,  Bunker, Nathan Scot

IPC: C07F9/38

CPC classification number: C07F9/650958 ,  C07F9/3813

公开(公告)号：EP0102694A1

公开(公告)日：1984-03-14

申请号：EP83303561.1

申请日：1983-06-21

Applicant: STAUFFER CHEMICAL COMPANY

Inventor： Wong, Rayman Young ,  Bunker, Nathan Scot

IPC: C07F9/38

CPC classification number: C07F9/650958 ,  C07F9/3813

Abstract: A method for the production of N-phosphonomethylglycine is disclosed which comprises the steps of:

(1) first reacting 2,5-diketopiperazine with p-form- aidehyde, then adding substituted phosphorus compound, all in the presence of a low molecular weight carboxylic acid solvent, to form an intermediate bisphosphonomethyl-2,5-diketopiperazine compound,
(2) isolating said intermediate compound,
(3) subsequently reacting said intermediate bisphosphonomethyl-2,5-diketopiperazine compound with a hydrolyzing agent: and,
(4) thereafter acidifying said reactants with a mineral acid to form the end product, N-phosphonomethylglycine.