Ate Complexes of Secondary Boronic Esters as Chiral Organometallic-Type Nucleophiles for Asymmetric Synthesis
作者:Robin Larouche-Gauthier、Tim G. Elford、Varinder K. Aggarwal
DOI:10.1021/ja2077813
日期:2011.10.26
The addition of an aryllithium reagent to a secondary boronic ester leads to an intermediate boron-ate complex that behaves as a chiral nucleophile, reacting with a broad range of electrophiles with inversion of stereochemistry. Depending on the electrophile, the C-B bond can be converted into C-I, C-Br, C-Cl, C-N, C-O, and C-C, all with very high levels of stereocontrol. This discovery now adds a
将芳基锂试剂添加到仲硼酸酯中会产生中间体硼酸酯络合物,其行为类似于手性亲核试剂,与广泛的亲电试剂反应,并产生立体化学反转。根据亲电试剂的不同,CB 键可以转化为 CI、C-Br、C-Cl、CN、CO 和 CC,所有这些都具有非常高的立体控制水平。这一发现现在为用于不对称有机合成的方法库增加了一种新的、容易获得的、构型稳定的、手性有机金属型试剂。