Photochemical aryl radical cyclizations to give (E)-3-Ylideneoxindoles

Gurry, Michael, Allart-Simon, Ingrid, McArdle, Patrick, Gerard, Stephane, Sapi, Janos and Aldabbagh, Fawaz (2014) Photochemical aryl radical cyclizations to give (E)-3-Ylideneoxindoles. Molecules, 19(10), pp. 15891-15899. ISSN (online) 1420-3049

Abstract

(E)-3-Ylideneoxindoles are prepared in methanol in reasonable to good yields, as adducts of photochemical 5-exo-trig of aryl radicals, in contrast to previously reported analogous radical cyclizations initiated by tris(trimethylsilyl)silane and azo-initiators that gave reduced oxindole adducts

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