Preparation process of N-substituted monochlorosuccinimides
US4970323A · kind A · utility
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17Claims
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Key dates
| Filing date | Jun 22, 1989 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Jun 22, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D207/416
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
N-substituted monochlorosuccinimides e.g., N-phenylmonochlorosuccinimide, can be prepared in a high yield by reacting a maleamic acid, e.g., N-phenylmaleamic acid, with phosgene in the presence of a catalyst, e.g., dimethylformamide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.