Preparation and application of 2-(arylmethoxy)isopinocampheols for the asymmetric aldol reaction of 3,3,3-trifluoropropionates
作者:P. Veeraraghavan Ramachandran、Gowrisankar Parthasarathy、Pravin D. Gagare
DOI:10.1016/j.tetlet.2011.08.034
日期:2011.10
The preparation of 2-(arylmethoxy)isopinocampheols from pinanediol via the DIABL-H reduction of the corresponding aryl aldehyde acetals has been described. A systematic examination of the asymmetric aldol reaction of 3,3,3-trifluoropropionates led to the double diastereoselective aldol reaction of 2-(arylmethoxy)isopinocampheyl 3,3,3-trifluoropropionates providing anti-α-trifluoromethyl-β-hydroxy esters
已经描述了通过DIABL-H还原相应的芳基醛缩醛由pin烷二醇制备2-(芳基甲氧基)异opinocampheols。导致的2-双非对映选择性醛醇缩合反应的3,3,3- trifluoropropionates不对称醛醇缩合反应的系统的检查(芳基甲氧)isopinocampheyl 3,3,3- trifluoropropionates提供抗在63-α三氟甲基β羟基酯–85%的产率、, 99%的抗选择性和80–96%的抗异构体de 。