Synthesis of 2-benzoyl-4-(2-hydroxybenzoyl)phenols by catalytic domino ‘Michael–retro-Michael–Mukaiyama-aldol’ reactions of 1-aryl-1,3-bis(silyloxy)buta-1,3-dienes with 3-formylchromones

The domino reaction of 1-aryl-1,3-bis(silyloxy)buta-1,3-dienes with 3-formylbenzopyrylium triflates, in situ generated from 3-formylchromones, afforded a variety of 2-benzoyl-4-(2-hydroxybenzoyl)phenols.

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