Highly Efficient Synthesis of Alkylboronate Esters via Cu(II)-Catalyzed Borylation of Unactivated Alkyl Bromides and Chlorides in Air
作者:Shubhankar Kumar Bose、Simon Brand、Helen Oluwatola Omoregie、Martin Haehnel、Jonathan Maier、Gerhard Bringmann、Todd B. Marder
DOI:10.1021/acscatal.6b02918
日期:2016.12.2
A copper(II)-catalyzed borylation of alkyl halides with bis(pinacolato)diboron (B2pin2) has been developed, which can be carried out in air, providing a wide range of primary, secondary, and some tertiary alkylboronates in high yields. A variety of functional groups are tolerated and the protocol is also applicable to unactivated alkyl chlorides (including 1,1- and 1,2-dichlorides). Preliminary mechanistic
已经开发出了铜(II)催化的卤化烷基卤与双(频哪醇)二硼化硼(B 2 pin 2),该反应可以在空气中进行,从而提供高范围的伯,仲和某些叔烷基硼酸酯。产量。可以耐受多种官能团,该方案也适用于未活化的烷基氯化物(包括1,1-和1,2-二氯化物)。初步的机理研究表明,这种硼化反应涉及单电子过程。