作者:Chun-Hua Yang、Xiangkun Sun、Congcong Niu、Zhiwei Zhang、Mingzhu Liu、Fangjie Zheng、Ling Jiang、Xiangtao Kong、Zhantao Yang
DOI:10.1021/acs.orglett.1c03062
日期:2021.10.15
A metal-free intramolecular borylative cyclization of 1,6-allenynes driven by BCl3 was developed. This method provides a general and practical strategy to construct valuable pyrrolidines containing all-carbon quaternary centers or 3,5-dihydroazepine derivatives depending on the substituents of the allene, with conjugative and sterically hindered phenyl groups favoring the latter.
开发了由 BCl 3驱动的 1,6-丙炔的无金属分子内硼酸化环化。该方法提供了一种通用且实用的策略来构建有价值的吡咯烷,这些吡咯烷包含全碳季中心或 3,5-二氢吖庚因衍生物,具体取决于丙二烯的取代基,共轭和空间位阻苯基有利于后者。