# US 6,720,451 B2 · Method for producing N-methyl-N′-nitroguanidine

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- Number: US 6,720,451 B2
- Document ID: US6720451B2
- Status: Granted
- Kind: B2
- Application number: 10/169,842
- Filed: 2002-07-09
- Published: 2003-01-02
- Granted: 2004-04-13
- Earliest claimed: 2000-01-12
- Assignees: Bayer Aktiengesellschaft
- Inventors: Kai van Laak; Wolfram Sirges
- Web page: https://patentgrep.com/patent/US6720451B2

## CPC

- C07C 277/08: of substituted guanidines
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS

## Abstract

The present invention relates to a novel process for the preparation of N-methyl-N′-nitroguanidine by reacting nitroguanidine with aqueous methylamine solution buffered by the addition of inorganic or organic acids.

## Claims

### Claim 1

A process for the preparation of N-methyl-N′-nitroguanidine of the Formula (I)
comprising the step of:
reacting nitroguanidine of the Formula (II)
with an aqueous methylamine solution buffered by the addition of an acid selected from the group consisting of an inorganic acid and an organic acid.