Preparation of cyclopropylethyne and intermediates for preparation of cyclopropylethyne
US6528693B1 · kind B1 · utility
27Cited by
1References
28Claims
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Key dates
| Filing date | Apr 5, 2001 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Apr 5, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
1-chloropropylethyne is prepared by dehydrochlorination with a base of 1-chloro-1-cyclopropylethene, which is itself prepared by treating 1-cyclopropylethanone with dichlorotriarylphosphorane or dichlorotrialkylphosphorane in the presence of a base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.