The Synthesis, Characterization and Dehydrogenation of Sigma-Complexes of BN-Cyclohexanes
作者:Amit Kumar、Jacob S. A. Ishibashi、Thomas N. Hooper、Tanya C. Mikulas、David A. Dixon、Shih-Yuan Liu、Andrew S. Weller
DOI:10.1002/chem.201502986
日期:2016.1.4
amino‐borane and, tentatively characterized using DFT/GIAO chemical shift calculations, cycloborazane intermediates. For NR2=NMeH the final product is the cyclic amino‐borane HBNMeC4H8. The mechanism of dehydrogenation of 2,2‐H,Me‐1,2‐B,N‐C4H10 using the Rh(iPr2PCH2CH2CH2PiPr2)}+ catalyst has been probed. Catalytic experiments indicate the rapid formation of a dimeric species, [Rh2(iPr2PCH2CH2CH2PiPr2)2H5][BArF4]
1,2-BN-环己烷 2,2-R 2 ‐1,2-B,N-C 4 H 10 (R 2 =HH, MeH, Me 2 ) 与 Ir 和 Rh 金属碎片的配位化学研究过。这导致了[Ir(PCy 3 ) 2 (H) 2 (η 2 η 2 ‐H 2 BNR 2 C 4 H 8 )][BAr的溶液(NMR光谱)和固态(X射线衍射)表征F 4 ] (NR 2 =NH 2 , NMeH) 和 [Rh( i Pr 2 PCH 2 CH 2 CH 2 P i Pr 2 )(η 2 η 2 ‐H 2 BNR 2 C 4 H 8 )][BAr F 4 ] (NR 2 =NH 2 , NMeH, NMe 2 )。对于 NR 2 =NH 2随后的金属促进,脱氢偶联显示最终通过氨基硼烷形成环状三环硼氮烷 [BNC 4 H 8 ] 3 ,并且使用 DFT/GIAO 化学位移计算初步表征了环硼氮烷中间体。对于NR 2 =N