Indium(i) iodide-catalyzed regio- and diastereoselective formal alpha-addition of an alpha-methylallylboronate to N-acylhydrazones.

Indium(i) iodide was found to catalyze the formal alpha-addition of an alpha-methylallylboronate to various N-acylhydrazones, in the presence of an alcohol additive, to afford the corresponding anti-alpha-adducts with high regio- and diastereoselectivity in high yields.