Rhodium-catalyzed asymmetric addition of arylboroxines to β-alkoxyacrylate esters

Abstract

Asymmetric addition of arylboroxines to β-alkoxyacrylate esters proceeded in the presence of a rhodium complex coordinated with a chiral diene ligand to give high yields of β-alkoxy-β-arylcarboxylic acid esters with very high enantioselectivity.