Intramolecular Wittig reactions. A new synthesis of coumarins and 2-quinolones

Desai, V.G.; Shet, J.B.; Tilve, S.G.; Mali, R.S.

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Intramolecular Wittig reactions. A new synthesis of coumarins and 2-quinolones

Desai, V.G.; Shet, J.B.; Tilve, S.G.; Mali, R.S.

Source : Journal of Chemical Research. 2003(10); 2003; 628-629.

URI: http://dx.doi.org/10.3184/030823403322655888
http://irgu.unigoa.ac.in/drs/handle/unigoa/1487

Date: 2003

Document Type: Journal article

Abstract:

o-Hydroxybenzaldehydes (1a-d) on reaction with chloroacetyl chloride in presence of pyridine followed by addition of triphenyl phosphine and base gave coumarins (2a-d). A similar sequence of reactions on o-aminoacetophenone/benzophenone (1e-f) and methyl anthranilate (1g) gave the corresponding 2-quinolones (2e-g).

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