Studies on sulphur heterocycles. Reactions of 6,7‐dihydrobenzo[ b ]thiophen‐4(5 H )one derivatives and their conversion to 7‐substituted thieno[2,3‐ h ][1]benzopyran‐8‐ones | Zendy

Asprou Chris M. | Zendy; Brunskill John S. A. | Zendy; Jeffrey Howard | Zendy; De Asish | Zendy

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Studies on sulphur heterocycles. Reactions of 6,7‐dihydrobenzo[ b ]thiophen‐4(5 H )one derivatives and their conversion to 7‐substituted thieno[2,3‐ h ][1]benzopyran‐8‐ones

Author(s) -

Asprou Chris M.,

Brunskill John S. A.,

Jeffrey Howard,

De Asish

Publication year - 1980

Publication title -

journal of heterocyclic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.321

H-Index - 59

eISSN - 1943-5193

pISSN - 0022-152X

DOI - 10.1002/jhet.5570170118

Subject(s) - chemistry , sulfur , medicinal chemistry , reaction conditions , organic chemistry , stereochemistry , catalysis

Cyclization of γ‐(2‐thienyl)butryic acid with acid anhydrides gives 2‐acyl derivatives as well as the expected 6,7‐dihydrobenzo[ b ]thiophen‐4(5 H )one. Several reactions of these ketones have been studied including their conversion to 0,0‐diethyl thiophosphonohydrazones. 7‐Substituted thieno[2,3‐ h ][1]benzopyran‐8‐ones have been prepared via 4‐hydroxybenzo[ b ]thiophen‐5‐carbaldehydes.

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