Highly efficient removal of allyloxycarbonyl (Alloc) function provides a practical orthogonal protective strategy for carbohydrates

Highly efficient removal of allyloxycarbonyl (Alloc) group was achieved in the presence of CH3COONH4, Pd[P(C6H5)(3)](4), and NaBH4 in MeOH-THF, within 5 min in almost quantitative yields (>90%, isolated yield) without affecting acetyl, benzoyl, isopropylidene, benzylidene, allyl, benzyl, benzyl carbonate, or azido groups. (C) 2008 Jian Jun Zhang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.