An Efficient Approach to the Synthesis of 4H-1-Benzothiopyran-4-ones via Intramolecular Wittig Reaction

DOI: 10.1039/c39920001580

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Journal of the Chemical Society. Chemical communications p. 1580 - 1581 (1992)

Update date:2022-08-05

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Authors:

Kumar, Pradeep

Rao, Ashok T.

Pandey, Bipin

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Article abstract of DOI:10.1039/c39920001580

The reaction of S-acyl(aroyl)thiosalicylic acids 2 with N-phenyl(triphenylphosphoranylidene)ethenimine 3 in stepwise fashion leads to the acylphosphoranes 5 which subsequently undergo intramolecular Wittig cyclization on the thiolester carbonyl to afford

Full text of DOI:10.1039/c39920001580

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