Synthesis and Comparative Characterization of 9-Boraanthracene, 5-Boranaphthacene, and 6-Borapentacene Stabilized by the H2IMes Carbene
作者:Thomas K. Wood、Warren E. Piers、Brian A. Keay、Masood Parvez
DOI:10.1002/chem.201001922
日期:2010.10.25
A general procedure for the preparation of three N‐heterocyclic carbene stabilized, boron‐containing acenes (9‐boraanthracene, 5‐boranaphthacene, and 6‐borapentacene) is presented. The key steps involve a transmetallation reaction between BCl3 and an appropriate stannacyclic precursor, and the dehydrochlorination of the H2IMes adduct of the chloroborane product. Comparative structural, photophysical
介绍了制备三个N杂环卡宾稳定的含硼并苯(9-硼蒽并,5-硼并四苯和6-硼并五苯)的一般程序。关键步骤涉及BCl 3与合适的锡环前体之间的金属转移反应,以及氯硼烷产物的H 2 IMes加合物的脱氯化氢反应。比较的结构,光物理和氧化还原特性显示出相对于全碳并苯类似物狭窄的HOMO-LUMO间隙。