Tandem Insertion–[1,3]‐Rearrangement: Highly Enantioselective Construction of α‐Aminoketones
作者:Yushuang Chen、Yun Liu、Zhaojing Li、Shunxi Dong、Xiaohua Liu、Xiaoming Feng
DOI:10.1002/anie.201914645
日期:2020.5.18
rearrangement reaction. The rhodium salt and chiral N,N ' -dioxide-indium(III) complex make up relay catalysis, which enables the O-H insertion of benzylic alcohols to N -sulfonyl-1,2,3-triazoles, and asymmetric [1,3]-rearrangement of amino enol ether intermediates, subsequently. Preliminary mechanistic studies suggested that the [1,3] O-to-C rearrangement step proceeded through an ion pair pathway.
通过串联插入/ [1,3] O-C重排反应很容易获得α-氨基酮衍生物的对映选择性合成。铑盐和手性N,N'-二氧化物-铟(III)配合物构成继发催化,这使得苄醇可以OH插入N-磺酰基-1,2,3-三唑,并且不对称[1,3] -氨基烯醇醚中间体的重排。初步的机理研究表明,[1,3] O-to-C重排步骤是通过离子对途径进行的。