Convenient synthesis of Z-monoacetates of 2-alkylidene-1,3-propanediols
摘要:
Various kinds of 3-substituted (Z)-hydroxymethyl-2-propenyl acetates were conveniently obtained in excellent yields by highly regioselective hydrolysis of 2-alkylidene-1,3-propylene diacetates in the presence of 100 w/w % of porcine pancreas lipase (PPL)Type II. (C) 2008 Elsevier Ltd. All rights reserved.
Various kinds of 3-substituted (E)-2-(hydroxymethyl)prop-2-enyl acetates were conveniently obtained in excellent yields by the regiospecific acetylation of 2-alkylidenepropane-1,3-diols with 10 equivalents of vinyl acetate in the presence of 50% w/w porcine pancreatic lipase (PPL) type II; the starting materials or (Z)-monoacetate or diacetate byproducts were generally not present.
Hydrolysis of substituted 2-benzylidene-1,3-propylene diacetates in the presence of 100 w/w % of porcine pancreas lipase (PPL) Type II proceeded to afford the corresponding Z-monoacetates in excellent yields with high regioselectivities.
Various kinds of 3-substituted (Z)-hydroxymethyl-2-propenyl acetates were conveniently obtained in excellent yields by highly regioselective hydrolysis of 2-alkylidene-1,3-propylene diacetates in the presence of 100 w/w % of porcine pancreas lipase (PPL)Type II. (C) 2008 Elsevier Ltd. All rights reserved.