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US 4,051,150 AGranted
3-(2-Dialkylamino-2-dialkylphosphonylvinyl)-6,11-dihydrodibe nzo-[b.e.]-thiepin-11-one
AssigneeSyntex (U.S.A.) Inc.
InventorArthur F. Kluge
Life of this patent
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Abstract
This invention relates to a novel method for the preparation of 6,11-dihydrodibenzo-[b.e.]-thiepin-11-one-3-acetic acid and the novel intermediates 3-(2-dialkylamino-2-dialkylphosphonylvinyl)-6,11-dihydrodibenzo-[b.e.]-thi epin-11-one in the preparation thereof.
Claims2
A compound of the formula:
- ##STR2## wherein R and R.sup.1 represent an alkyl radical containing from 1 to 4 carbon atoms.
Dependencies are inferred from the claim text.