Selective Monobenzoylation of 1,2- and 1,3-Diols Catalyzed by Me2SnCl2 in Water (Organic Solvent Free) under Mild Conditions
摘要:
We have developed an efficient method for selective monobenzoylation of 1,2- and 1,3-diols in water catalyzed by Me2SnCl2. Treatment of 1,2- and 1,3-diols with benzoyl chlorides, DMT-MM, and potassium carbonate in the presence of a catalytic amount of Me2SnCl2 and DMAP in water at room temperature gave monobenzoates in up to 97% yield.
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.