A new microwave assisted synthesis methodology has been presented for the preparation of the ferrocene amides. Ferrocene carboxylic acid was derivatised using direct 1H-Benzotriazole/SOCl2 methodolgy to prepare N-ferrocenoyl benzotriazole as a new starting material for the functionalization of ferrocene ring. N-ferrocenoyl benzotriazole was reacted with mono- and di-amines under microwave irradiation to prepare ferrocene mono- and di-amides in high purity and in good yield. (C) 2008 Elsevier B.V. All rights reserved.
N-ferrocenoyl benzotriazole: A convenient tool for the synthesis of ferrocenoyl esters
作者:Deniz Hür、Sultan Funda Ekti、Hakan Dal
DOI:10.1016/j.jorganchem.2009.11.015
日期:2010.4
A new synthesis methodology has been presented for the preparation of the ferrocenoyl esters. Ferrocene carboxylic acid was derivatized using direct 1H-benzotriazole/SOCl2 methodology to prepare N-ferrocenoyl benzotriazole as a convenient tool for the functionalization of ferrocene ring. N-ferrocenoyl benzotriazole was reacted with alcohols in mild conditions to prepare ferrocenoyl esters in high purity and in good yield. The solid state structure of benzyl-1-ferrocenoate, 2f, has also been determined by X-ray crystallography. In the crystal structure, intermolecular C-H center dot center dot center dot O hydrogen bonds link the molecules into a two-dimensional network. The pi center dot center dot center dot pi contacts between the cyclopentadiene rings and cyclopentadiene and phenyl rings, [centroid-centroid distances = 3.296(1) and 3.750(1) angstrom] may further stabilize the structure. Two weak C-H center dot center dot center dot pi interactions are also found. (C) 2009 Elsevier B. V. All rights reserved.
N-acylbenzotriazole mediated microwave assisted synthesis of protected and novel unprotected ferrocenoylamidoamino acids
作者:Deniz Hür、Sultan Funda Ekti Dal、Görkem Ali Varol、Evrim Hür
DOI:10.1016/j.jorganchem.2011.03.037
日期:2011.7
In this study, crystalline and chirally stable carboxyl-protected and novel unprotected N-ferrocenoyl amino acid derivatives of Ser, Cys, Ala, Phe, Trp, Asp and Asn have been prepared. These amino acids undergo substitution reaction with 1-(ferrocenylcarbonyl)-1H-benzotriazole, 1, in partially aqueous media under microwave irradiation. (C) 2011 Elsevier B.V. All rights reserved.