Formation of C(sp<sup>2</sup>)Boronate Esters by Borylative Cyclization of Alkynes Using BCl<sub>3</sub>
作者:Andrew J. Warner、James R. Lawson、Valerio Fasano、Michael J. Ingleson
DOI:10.1002/anie.201505810
日期:2015.9.14
BCl3 is an inexpensive electrophile which induces the borylative cyclization of a wide range of substituted alkynes to regioselectively form polycycles containing synthetically versatile C(sp2)boronate esters. It proceeds rapidly, with good yields and is compatible with a range of functional groups and substitution patterns. Intermolecular 1,2‐carboboration of alkynes is also achieved using BCl3 to
BCl 3是一种廉价的亲电子试剂,可诱导多种取代炔烃的硼基化环化,以区域选择性地形成含有合成用途广泛的 C(sp 2 ) 硼酸酯的多环。它进展迅速,收率良好,并且与一系列官能团和取代模式兼容。使用 BCl 3还可实现炔烃的分子间 1,2-碳硼化,生成三取代的硼酸乙烯基酯。