Process for the production of 1-(n-methanesulfonyl-n-methylaminosulfonyl)-3-(2-pyrimidyl) urea derivatives
US5180826A · kind A · utility
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Key dates
| Filing date | Mar 19, 1992 |
| Grant date | Jan 19, 1993 |
| Priority date | — |
| Expiry date | Mar 19, 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 chlorosulfonylisocyanate (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.