Patent · US Expired

Method for production of 1,3-disubtituted 2-nitroguanidines

US6528651B1 · kind B1 · utility

0Cited by

11References

1Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Kai van Laak · Recklinghausen, DE
Wolfram Sirges · Düsseldorf, DE
Detlef Wollweber · Wuppertal, DE

Key dates

Filing date	Jun 14, 2002
Grant date	Mar 4, 2003
Priority date	—
Expiry date	Jun 14, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D307/14
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for the preparation of compounds of the formula (I) by reacting compounds of the formula (II) in whichHet, R1, R2 and R4 are as defined in the description,with anhydrous hydrogen chloride or compounds which generate hydrogen chloride.

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