Gao Hao, Li Qianli, Cui Ping, Tung Chen-Ho, Kong Lingbing
School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P. R. China.
School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, P. R. China.
Inorg Chem. 2021 Jun 21;60(12):8432-8436. doi: 10.1021/acs.inorgchem.1c00866. Epub 2021 May 27.
A facile route to synthesis of B═C double-bonded systems has been developed. Specifically, both dibromofluorenylborane (FluH-BBr) and a 1,1-dibromo-2,2-difluorenyldiborane/dimethyl sulfide adduct [(FluH)B-BBr(SMe)] could be smoothly dehydrobrominated and subsequently coordinated by N-heterocyclic carbenes (NHCs) with formation of the respective alkylideneborane and diborabutadiene . The electronic structures of and are interrogated and compared with those of base-free counterparts through density functional theory calculations.
一种简便的合成B═C双键体系的方法已经被开发出来。具体而言，二溴芴基硼烷（FluH-BBr）和1,1-二溴-2,2-二芴基二硼烷/二甲硫醚加合物[(FluH)B-BBr(SMe)]都可以顺利地进行脱溴化氢反应，随后与N-杂环卡宾（NHCs）配位，形成相应的亚烷基硼烷和二硼丁二烯。通过密度泛函理论计算，对 和 的电子结构进行了研究，并与无碱对应物的电子结构进行了比较。
