Patent · US Expired

Process for the production of 1-(N-Methanesulfonyl-N-methylaminosulfonyl)-3-(2-pyrimidyl)urea derivatives

US5189217A · kind A · utility

1Cited by

0References

1Claims

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Assignee

LONZA LTD · CH

Inventors

Gareth Griffiths · Visp, CH
Aleksander Warm · Visp, CH
Felix Previdoli · Brig, CH
Gary Ryan · Visp, CH

Key dates

Filing date	Jul 23, 1992
Grant date	Feb 23, 1993
Priority date	—
Expiry date	Jul 23, 2012

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D239/52
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for the production of 1-(N-methanesulfonyl-N-methylaminosulfonyl)-3-(2-pyrimidyl) urea derivatives (MMSPH). In the process, methanesulfonylmethylamine (MMSA) is first converted with chlorosulfonylisocyanata (CSI) into a 1-methanesulfonyl-1-methyl-3- (N-methanesulfonyl-N-methylaminosulfonyl) urea derivative (MMMSH) and then the MMMSH is converted with a 2-aminopyridine into the end product.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.