作者:Yuri Tulchinsky、Mark A. Iron、Mark Botoshansky、Mark Gandelman
DOI:10.1038/nchem.1068
日期:2011.7
transition-metal complexes. Here, we describe the preparation of several N-heterocyclic nitrenium ions that are isoelectronic and isostructural to NHCs, and study their ligand properties. The formation of relatively strong nitrenium–metal bonds is unambiguously confirmed, in solution by selective 15N-labelling experiments, and in the solid state by X-ray crystallography. Experimental and computational studies
与现在在基于金属的化学中无处不在的N-杂环卡宾 (NHC)不同,氮衍生的类似物(其中碳被等电子氮阳离子取代,氮鎓离子)作为金属的配体仍然难以捉摸. 这是特别有趣的,因为已经制备了 NHC 的其他几种主要类似物,并且已显示与过渡金属配合物配位。在这里,我们描述了几种与 NHCs 等电子和同构的N-杂环氮烯离子的制备,并研究了它们的配体特性。在溶液中通过选择性15N-标记实验,并通过 X 射线晶体学在固态。这种新型配体的电子特性的实验和计算研究表明,它们是较差的σ供体和良好的π受体。
Alkynylbenzotriazoles by direct alkynylation of benzotriazole using alkynyliodonium salts
Alkynyl(phenyl)iodonium salts react with benzotriazole ion prepared from benzotriazole and potassium t-butoxide to give 1-alkynylbenzotriazoles in good yields, indicating that the alkynyliodonium salts can be used for direct alkynylation of benzotriazole. (C) 1998 Elsevier Science Ltd. All rights reserved.
JANKOWSKI Z.; STOLARSKI R., POL. J. CHEM., 1980, 54, NO 1, 107-116
作者:JANKOWSKI Z.、 STOLARSKI R.
DOI:——
日期:——
KUODIS, Z. P.;JOKUBAJTITE, S. P., TR. AN LITSSR, 1983, N 5/138, 43-48