Deprotection of tuioacetals by wet alumina supported cr(VI) oxide under solvent-free conditions

Abstract

Wet alumina supported chromium( VI) oxide performed efficient deprotection of S,S-acetals ( 1 ), 1,3-dithiolanes and 1,3-dithianes ( 2 ) under solvent-free conditions at room temperature. The reaction has been carried out in excellent yield and short reaction time under solvent-free conditions and the purification of products was straightforward.