One-step synthesis of 2,3-dihydronaphtho[2,3-b]thiophene-4,9-diones by a new regioselective [3 + 2] photoaddition of photogenerated 2-mercapto-1,4-naphthoquinone with alkenes
- 1 January 1993
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 9,p. 807-809
- https://doi.org/10.1039/c39930000807
Abstract
2,3-Dihydronaphtho[2,3-b]thiophene-4,9-diones are formed in one-step reactions in 6–41 % yields by an unprecedented regioselective (3 + 2] photoaddition of 2-mercapto-1,4-naphthoquinone, generated by the photochemical decarbonylation of 5-hydroxynaphth[2,1-d]-1,3-oxathiol-2-one, with alkenes.Keywords
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