Synthesis and Characterization of 1,2‐Azaborine‐Containing Phosphine Ligands: A Comparative Electronic Structure Analysis
作者:Cameron R. McConnell、Patrick G. Campbell、Carey R. Fristoe、Philipp Memmel、Lev N. Zakharov、Bo Li、Clovis Darrigan、Anna Chrostowska、Shih‐Yuan Liu
DOI:10.1002/ejic.201700242
日期:2017.4.18
The synthesis and characterization of two 1,2-azaborine-containing phosphineligands are described. The structural and electronic parameters of the two ligands were compared with those of their direct all-carbon analogues using X-ray crystallography and UV-photoelectron and IR spectroscopy. Our results indicate that the azaborine-containing ligands are significantly stronger electron donors than their
描述了两个含 1,2-氮杂硼的膦配体的合成和表征。使用 X 射线晶体学、紫外光电子和红外光谱,将两种配体的结构和电子参数与其直接全碳类似物的结构和电子参数进行了比较。我们的结果表明,含氮杂硼的配体是比其相应的碳质对应物强得多的电子供体,而空间参数保持相似。
Metal Nitrate Mediated Regioselective Nitration of BN-Substituted Arenes
作者:Ying Zhang、Wenyan Dan、Xiangdong Fang
DOI:10.1021/acs.organomet.7b00120
日期:2017.5.8
A regioselective nitration of BN-substituted arene compounds has been successfully developed. The first examples of BN-nitroarenes have been synthesized and structurally characterized by X-ray diffraction analysis. Photophysical studies of these novel compounds reveal an effective pi conjugation between the nitro group and 1,2-azaborine moiety in the solution phase. A plausible mechanism for this nitration reaction is proposed.