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Issue 10, 1996
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Pyryliumolates II—generation of and cycloaddition reactions with isoxazole annulated pyryliumolates

Abstract

Isoxazole annulated pyryliumolates (formed in situ from diazo compounds 3 and 6) can be trapped with DMAD to form 1:1 adducts (5,8) and in minor amount 2:1 adducts (Schemes 4 and 5). Suitably substituted pyryliumolates (7b,c) undergo an intramolecular cycloaddition giving 9 and 10. Compound 10 can be transformed easily to an annulated tropolone (11). Computational studies on 2:1 adducts and on 11 are reported.

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Article information


J. Chem. Soc., Perkin Trans. 1, 1996, 1035-1040
Article type
Paper

Pyryliumolates II—generation of and cycloaddition reactions with isoxazole annulated pyryliumolates

C. Plüg and W. Friedrichsen, J. Chem. Soc., Perkin Trans. 1, 1996, 1035
DOI: 10.1039/P19960001035

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