Patent ID: 6541659
Filing Date: 2003-04-01
Classification: B01J,C07B,C07C

Abstract:
A process for acyl substitution of an anhydride with an active-hydrogen-containing compound, comprising reacting said anhydride with said active-hydrogen-containing compound in the presence of a vanadyl salt catalyst, wherein said vanadyl salt catalyst has the following formula:(VO)X2, wherein X2 is selected from the group consisting of (OTf)2, SO3-aryl, SO4, (acac)2, (CH3CO2)2, (F)2, (Cl)2, (Br)2, (I)2, Al2O4, (N3)2, SbF6, HPO4, MoO4, (NbO3)2, (NO3)2, C2O4, (ClO4)2, SeO4, Pt(CN)4, TiO3, WO4, and ZrO3.