Lu Wei, Xu Kai, Li Yongxin, Hirao Hajime, Kinjo Rei
Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Nanyang Link 21, Singapore, 637371, Singapore.
Department of Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
Angew Chem Int Ed Engl. 2018 Nov 26;57(48):15691-15695. doi: 10.1002/anie.201808357. Epub 2018 Nov 8.
Metal-free activation of homoatomic E-E σ bonds (E=P, B) in white phosphorus (P ) and bis(catecholato)diboron (B cat ) with a 1,2-diboraallene 1 is reported. The 1:1 and 1:2 reactions of P with 1 afford B P cages (2: n=2, 3: n=4), whereas a stoichiometric mixture of 1 and B cat undergoes homonuclear catenation through the addition of the B-B σ bond of B cat across the B=B double bond of 1 (i.e. diboration), which leads to the formation of a tetraborane (4) featuring a B chain.
报道了用1,2-二硼丙二烯1对白磷（P₄）和双（邻苯二酚）二硼（B₂cat₂）中的同原子E-E σ键（E = P，B）进行无金属活化。P₄与1的1:1和1:2反应生成BP笼（2：n = 2，3：n = 4），而1与B₂cat₂的化学计量混合物通过B₂cat₂的B-B σ键加成到1的B = B双键上进行同核链化（即二硼化），这导致形成具有B链的四硼烷（4）。
