Photochemical Synthesis of a Ladder Diborole: A New Boron‐Containing Conjugate Material
作者:Juan F. Araneda、Benedikt Neue、Warren E. Piers、Masood Parvez
DOI:10.1002/anie.201204367
日期:2012.8.20
Climbing the ladder: Reductive cyclization of alkynyl haloboranes lead to the bis‐benzocycloborabutylidene rather than the expected ladder diborole, despite the former being much less thermodynamically favored. Photochemical conversion to the ladder diborole was, however, quite facile upon irradiation at 254 nm.
爬梯子:炔基卤环烷的还原环化反应生成双苯并环硼硼丁烯,而不是预期的梯形二硼烷,尽管前者在热力学上受青睐的程度低得多。但是,在254 nm照射下,光化学转化为梯形二硼烷非常容易。