Process for preparing new imidazolemethylphosphonium salts
US4163858A · kind A · utility
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2References
3Claims
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Assignee
Inventors
Key dates
| Filing date | Mar 8, 1978 |
| Grant date | Aug 7, 1979 |
| Priority date | — |
| Expiry date | Mar 8, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F9/6506
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
New imidazolemethylphosphonium salts having a degradable group at the 2-position which are useful intermediates for preparing histamine H.sub.2 antagonists. This invention concerns the preparation of imidazolemethylphosphonium salts having no substituent at the 2-position by heating the compounds referred to above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.