Abstract
A Rh<sub>2</sub>(OAc)<sub>4</sub>-catalyzed three-component reaction of carboxylic acids, α-diazoacetophenones, and <i>N</i>-Boc imines has been developed to efficiently produce β-amino alcohol derivatives. Oxonium ylides generated from carboxylic acids and metal carbenoids have been intercepted by electrophiles for the first time.
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