Boratranes with all six-membered rings or with two different ring sizes: Synthesis, characterization, and X-ray crystal structures
作者:Da Jung Kim、Younjin Hong、So Han Kim、Kang Mun Lee、Sang-deok Mun、Sungwoo Yoon、Junseong Lee、Youngkyu Do、Youngjo Kim
DOI:10.1016/j.ica.2011.08.027
日期:2011.11
characterized by solution 1H, 13C1H} and, 11B NMR and the crystal structures of 1 and 3 have been determined by single crystal X-ray diffraction. Compounds 1 and 3 are the first structurally characterized boratrane derivatives bearing all six-membered rings and mixed ring systems in the atrane cage, respectively. Especially, the molecular structures of 1 revealed that its transannular N–B bond length of
摘要新型的硼烷素B [(Oo-ArCH2)3-nN(CH2CH2O)n](Ar = 2,4-di-MeC6H2; n = 0,1; n = 1,2; n = 2,3)具有以下特征通过B(OMe)3与一系列四齿配体如(HO-o- ArCH2)3-nN(CH2CHOH)n(Ar = 2,4-di-MeC6H2; n = 0,L1H3; n = 1,L2H3; n = 2,L3H3)。通过溶液1H,13C 1H}和11B NMR对化合物1-3进行了表征,并通过单晶X射线衍射确定了化合物1和3的晶体结构。化合物1和3是第一个在结构上表征的硼烷烃衍生物,分别在atrane笼中带有所有六元环和混合环系统。特别是1的分子结构表明其跨环NB键长度为1。