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Chemoselective method for the synthesis of 4-allyl-4-hydroxycyclohexa-2,5-dienone derivatives from 1,4-quinones by an indium-mediated allylation protocol
Allyl indium halide on reaction with 1,4-quinones produced 4-allyl-4-hydroxycyclohexa-2,5-dienone derivatives. Unsymmetrical quinones show high chemoselectivity in addition of allyl indium halide reagent to the carbonyl group.