Reactions of a BICAAC with hydroboranes: propensity for Lewis adduct formation and carbene insertion into the B–H bond
作者:Krishna K. Manar、Vishal Kumar Porwal、Rohit S. Kamte、Manu Adhikari、Sandeep Kumar Thakur、Deependra Bawari、Angshuman Roy Choudhury、Sanjay Singh
DOI:10.1039/c9dt03382c
日期:——
The reactivity of a bicyclic (alkyl)(amino)carbene (BICAAC) towards different boranes has been examined in the present work. The reactions with boranes BX3·SMe2 (X = H, Cl, Br), BF3·OEt2 and BCl3 yield Lewis adducts [BICAAC·BH3] (1), [BICAAC·BHCl2] (2), [BICAAC·BH2Cl] (3), [BICAAC·BF3] (4), [BICAAC·BCl3] (5) and [BICAAC·BBr3] (6) respectively, whereas more hydridic boranes, 9-borabicyclo[3.3.1]nonane
在本工作中,已经研究了双环(烷基)(氨基)碳烯(BICAAC)对不同硼烷的反应性。与硼烷BX3·SMe2(X = H,Cl,Br),BF3·OEt2和BCl3的反应生成路易斯加合物[BICAAC·BH3](1),[BICAAC·BHCl2](2),[BICAAC·BH2Cl](3 ),[BICAAC·BF3](4),[BICAAC·BCl3](5)和[BICAAC·BBr3](6),而更多的氢化硼烷,9-硼环[3.3.1]壬烷(9-BBN)和儿茶酚硼烷(HBcat),可将卡宾碳插入BH键中以形成[BICAAC(H)-(9-BBN)](7)和[BICAAC(H)-Bcat](8)。这些络合物是BICAAC硼化合物的第一个实例,并已使用IR,多核NMR光谱,HRMS光谱和单晶X射线衍射进行了表征。还进行了计算分析,以深入了解BH键活化和加合物形成的机理。此外,已经将BICAAC与硼烷的反应与已