Chemoselective method for the synthesis of 4-allyl-4-hydroxycyclohexa-2, 5-dienone derivatives from 1, 4-quinones by an indium-mediated allylation protocol
Though the reaction of allyl indium halide with 1,2-or 1,3 diketones 11. and 12. are known, to the best of our knowledge, there are two reports 13. and 13. on studies of the reaction of allyl indium halides with 1,4-diketones or 1,4 benzoquinone derivative only. However there is a report on allylation of 1,4-quinones using Cd as catalyst. 13c Here we report our results on the synthesis of some 4-allyl-4-hydroxycyclohexa-2,5-dienone derivatives by reaction of suitable 1,4- ...
