Aminocarbonylation of 1,1′-diiodoferrocene, two-step synthesis of heterodisubstituted ferrocene derivatives via homogeneous catalytic carbonylation/coupling reactions
摘要:
Detailed investigation of the catalytic carbonylation of 1, 1'-diiodoferrocene has been carried out. The importance of the 1'-iodoferrocenecarboxamide- or 1'-iodo-ferroceneglyoxylic amide-type products as starting materials for the synthesis of various heterodisubstituted ferrocenes, that can serve as starting materials for ferrocene-based biosensors, was also proved. The potential of this reaction sequence was shown by the high-yielding synthesis of 1'-vinyl ferrocenecarboxamide/glyoxylic amide and 1'-acyl ferrocencarboxamide derivatives. (C) 2004 Elsevier B.V. All rights reserved.
Formation of intramolecular hydrogen bonds in heterodisubstituted ferrocene diamides with a secondary and a tertiary amido group: X-ray structure of 1′-(N′-butyl-carbamoyl)-morpholino ferrocenecarboxamide
作者:Árpád Kuik、Rita Skoda-Földes、Attila C. Bényei、Gábor Rangits、László Kollár
DOI:10.1016/j.jorganchem.2006.03.013
日期:2006.6
bearing a secondary and a tertiary amido group are explained by the formation of an internal hydrogen bond between the substituents. Addition of chloride ions (as a tetrabutylammonium salt) into the solutions of these compounds results in spectroscopic changes due to the formation of intermolecular hydrogen bonds between the ferrocene diamide and the anion. The solid state structure of 1′-(N′-butyl-
从1,1′-二碘二茂铁开始,通过均相催化羰基化合成了各种不对称取代的二茂铁1,1′-二酰胺。带有仲和叔酰胺基的化合物在1 H NMR和IR光谱中观察到的独特特征是通过在取代基之间形成内部氢键来解释的。由于二茂铁二酰胺和阴离子之间形成了分子间氢键,因此将氯离子(四丁基铵盐)加到这些化合物的溶液中会导致光谱变化。1'-(N'-丁基-氨基甲酰基)-吗啉代二茂铁羧酰胺(1a)也已通过X射线晶体学测定。观察到N'-丁基-氨基甲酰基部分的NH基团和叔酰胺基的CO之间的强分子内H键。