An Efficient Synthesis of Chiral Diamines with Rigid Backbones: Application in Enantioselective Michael Addition of Malonates to Nitroalkenes
作者:Qiming Zhu、Hanmin Huang、Dengjian Shi、Zhiqiang Shen、Chungu Xia
DOI:10.1021/ol901776n
日期:2009.10.15
new and efficient route for synthesis of enantiomerically pure biisoindoline and its isomer based on the diaza-Cope rearrangement reaction with chiral 1,2-bis(2-hydroxylphenyl)-1,2-diaminoethane as starting material has been developed. The newly prepared biisoindoline was employed as a chiral ligand in the Ni(II)-catalyzed enantioselective Michael addition of malonates to conjugated nitroalkenes, and
基于手性1,2-双(2-羟基苯基)-1,2-二氨基乙烷的diaza-Cope重排反应,开发了一种新的高效合成对映体纯的二异吲哚啉及其异构体的途径。在Ni(II)催化的丙二酸酯的Ni(II)催化的对映选择性迈克尔加成反应中,将新制备的二异吲哚啉用作手性配体,并获得良好至优异的对映选择性。