University of Cagliari
Unexpected migration of benzoyl group in the synthesis of 3-benzoyl-2-phenylbenzofurans under Wittig conditions
BEGALA M;DELOGU G
2019-01-01
Abstract
In the present work we report the unexpected formation of isomeric 3-benzoyl-2-phenylbenzo[b]furans using triphenylphosphonium salt and benzoyl chlorides under Wittig conditions. In particularly, we found that the o-[(benzoyloxy)benzyl]-triphenyl-phosphoranes constitute the key intermediate that reasonably undergoes benzoyl group migration.
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