Rao Bin, Kinjo Rei
Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Nanyang Link 21, Singapore, 637371, Singapore.
Angew Chem Int Ed Engl. 2019 Dec 9;58(50):18150-18153. doi: 10.1002/anie.201910933. Epub 2019 Oct 23.
A cyclic (alkyl)(amino)germylene undergoes a ring expansion reaction with dibromomesitylborane (MesBBr ) to afford a six-membered dibromogermane derivative. In the presence of Lewis bases (PMe or NHC), reduction of the latter with two equivalents of potassium graphite (KC ) gives rise to cyclic (alkyl)(boryl)germylene-Lewis base adducts. Upon heating, the germylene-PMe adduct reacts with H to yield a germane, probably via a base-free germylene featuring a small HOMO-LUMO gap.
一种环状（烷基）（氨基）亚锗烯与二溴均三甲苯基硼烷（MesBBr₂）发生扩环反应，生成一种六元二溴锗烷衍生物。在路易斯碱（PMe₃或NHC）存在下，后者与两当量的石墨化钾（KC₈）反应，生成环状（烷基）（硼基）亚锗烯 - 路易斯碱加合物。加热时，亚锗烯 - PMe₃加合物与H₂反应生成一种锗烷，可能是通过具有较小HOMO - LUMO能隙的无碱亚锗烯中间体进行的。
