Synthesis of enantiomerically pure (S)-3-trichloromethylbutyric acid via asymmetric conjugate addition of trichloromethyl metal compounds to a chiral enoate. Activation effect of a sulfonylamino group
作者:Günter Helmchen、Günter Wegner
DOI:10.1016/s0040-4039(00)95121-9
日期:1985.1
(+)(S)-3-Trichloromethylbutyric acid, a building block for syntheses of various marine natural products, can be prepared via 99:1 stereoselective conjugate addition of Cl3CMgCl to the crotonate of a chiral auxiliary containing a sulfonylamino substituent.
(+)(S)-3-三氯甲基丁酸是合成各种海洋天然产物的基础,可以通过将Cl 3 CMgCl 99:1立体选择性共轭加成到含有磺酰基氨基取代基的手性助剂的巴豆酸中来制备。