Mild, versatile, and chemoselective indium(III) triflate-catalyzed deprotection of acetonides under microwave heating conditions
摘要:
A series of acetonides (both terminal and internal isopropylidene acetals) have been deprotected under catalytic, neutral conditions to give their corresponding 1,2-diols. The reactions utilize indium(III) triflate in the presence of water and an organic solvent with mild microwave heating. Terminal acetonides are chemoselectivley removed in the presence of internal acetonides; acid labile functional groups remain intact under these conditions, thereby greatly enhancing the scope of the reaction substrates that can be utilized with this approach. (C) 2010 Elsevier Ltd. All rights reserved.