PROCESS FOR THE PREPARATION OF N-(PHOSPHONOMETHYL)GLYCINE BY OXIDIZING N-SUBSTITUTED N-(PHOSPHONOMETHYL)GLYCINE

Title:

PROCESS FOR THE PREPARATION OF N-(PHOSPHONOMETHYL)GLYCINE BY OXIDIZING N-SUBSTITUTED N-(PHOSPHONOMETHYL)GLYCINE

Document Type and Number:

WIPO Patent Application WO2000009517

Kind Code:

A3

Abstract:

This invention is directed to an improved process for the preparation of N-(phosphonomethyl)glycine (i.e., "glyphosate"), a salt of N-(phosphonomethyl)glycine, or an ester of N-(phosphonomethyl)glycine. The process comprises combining an N-substituted N-(phosphonomethyl)glycine reactant with oxygen in the presence of a noble metal catalyst. The N-substituted N-(phosphonomethyl)glycine reactant has formula (V) wherein R<1> and R<2> are independently selected from the group consisting of hydrogen, halogen, -PO3R<12>R<13>, -SO3R<14>, -NO2, hydrocarbyl, and substituted hydrocarbyl other than -CO2R<15>; and R<7>, R<8>, R<9>, R<12>, R<13>, R<14>, and R<15> are independently selected from the group consisting of hydrogen, hydrocarbyl, substituted hydrocarbyl, and an agronomically acceptable cation.

Inventors:

MORGENSTERN DAVID A (US)
MCKENZIE DAVID E (US)
ORTH ROBERT (US)
OBURN DAVID (US)
LUDWIG CINDY (US)
WAN KAM-TO (US)
DZENITIS JOHN M (US)

Application Number:

PCT/US1999/010242

Publication Date:

September 28, 2000

Filing Date:

May 10, 1999

Export Citation:

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Assignee:

MONSANTO CO (US)
MORGENSTERN DAVID A (US)
MCKENZIE DAVID E (US)
ORTH ROBERT (US)
OBURN DAVID (US)
LUDWIG CINDY (US)
WAN KAM TO (US)
DZENITIS JOHN M (US)

International Classes:

B01J23/42; B01J31/02; B01J31/06; B01J31/22; B01J32/00; B01J21/18; B01J37/02; C07B61/00; C07C213/02; C07C215/08; C07F9/38; (IPC1-7): C07F9/38; C07B33/00; B01J23/38; C07C213/08; B01J31/28

Domestic Patent References:

WO1995000523A1

1995-01-05

Foreign References:

EP0472693A1	1992-03-04
US4097533A	1978-06-27
EP0858835A1	1998-08-19

Other References:

DATABASE WPI Section Ch Week 199918, Derwent World Patents Index; Class C01, AN 1999-215248, XP002900620
DATABASE WPI Section Ch Week 199723, Derwent World Patents Index; Class A41, AN 1997-255484, XP002900970

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