Highly enantioselective transformations on 3,4-dihydroxytetrahydrofurans catalyzed by lipases
作者:Verónica Recuero、Rosario Brieva、Vicente Gotor
DOI:10.1016/j.tetasy.2008.05.027
日期:2008.7
Enzymatic acylations and alkoxycarbonylations of cis- and trans-3,4-dihydroxytetrahydrofuran and hydrolysis of their diacetylated and dialkoxycarbonylated derivatives have been studied. High enantioselectivity is obtained using Pseudomonas cepacia lipase as a catalyst in the hydrolysis of the trans-diacetyl derivative, while for the desymmetrization of the cis-3,4-dihydroxytetrahydrofuran the best
Truncated Cinchona alkaloids as catalysts in enantioselective monobenzoylation of meso-1,2-diols
作者:E. Peter Kündig、Alvaro Enriquez Garcia、Thierry Lomberget、Pablo Perez Garcia、Patrick Romanens
DOI:10.1039/b808268e
日期:——
Readily synthesised quincorine and quincoridine derived chiral diamines efficiently catalyse the asymmetric monobenzoylation of cyclic and acyclic meso-1,2-diols.