Process for producing 1,3-dimethyl-2-imidazolidinone
US4668793A · kind A · utility
4Cited by
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7Claims
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Key dates
| Filing date | Nov 1, 1985 |
| Grant date | May 26, 1987 |
| Priority date | — |
| Expiry date | Nov 1, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D233/32
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for producing 1,3-dimethyl-2-imidazolidinone with a high yield which comprises reacting N,N'-dimethylethylene diamine and/or its hydrochloride with phosgene in the presence of a substantial amount of water and a dehydrochlorinating agent. Particularly, higher yield is attained by carrying out the reaction in water medium while controlling a pH to the range of 3.0 to 10.0 by adding a dehydrochlorinating agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.