A simple and direct synthesis of α-hydroxy unsaturated aldehydes from α-cyano-α-hydroxymethyl epoxides
Abstract
The ring opening of α-cyano-α-hydroxymethyl epoxides by a solution of the complex Li2NiBr4 in tetrahydrofuran leads to α-bromo-α′-hydroxy ketones which in treatment with pyridine give good yields of α-hydroxy unsaturated aldehydes.