A catalytic and iterative route to β-substituted esters via highly enantioselective conjugate addition of dimethylzinc to unsaturated malonates
作者:Julia Schuppan、Adriaan J. Minnaard、Ben L. Feringa
DOI:10.1039/b315871c
日期:——
Using the chiral phosphoramidite ligand (S,R,R)-L1 in the conjugate addition of dimethylzinc to acyclic unsaturated malonates, enantioselectivities of up to 98% have been obtained for the first time. An iterative and stereodivergent route to 3,5-dimethyl esters that takes advantage of this asymmetric catalysis has been developed.
在将二甲基锌共轭加成到无环不饱和丙二酸酯中时,使用手性亚磷酰胺配体(S,R,R)-L1,首次获得了高达98%的对映选择性。已经开发出利用这种不对称催化作用的3,5-二甲基酯的迭代和立体发散途径。