Alkanesulfonamido triphenylethylenes
US4001229A · kind A · utility
6Cited by
0References
12Claims
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Assignee
Inventor
Key dates
| Filing date | Apr 4, 1974 |
| Grant date | Jan 4, 1977 |
| Priority date | — |
| Expiry date | Apr 4, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D295/13
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Triphenylethylenes having an N-(dialkylaminoalkyl)alkanesulfonamide substituent in the one of the phenyl rings may be prepared from similarly substituted benzophenones by reaction thereof with a benzyl Grignard reagent followed by dehydration of the resulting triphenylethanol intermediate and if desired chlorination or nitration of the resulting product. The triphenylethylenes have estrogenic and post-coital antifertility action and are useful as intermediates for the preparation of other triphenylethylene compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.