Ferrocenecarbothioamide and N-ethoxycarbonylferrocenecarbothioamide: Synthesis, structure and application in synthesis of 2,4-diferrocenylthiazole
摘要:
Ferrocenecarbothioamide (1) and its N-ethoxycarbonyl derivative (2) were synthesised by a Friedel-Crafts type reaction of ferrocene with potassium thiocyanate and ethoxycarbonyl isothiocyanate, respectively, in a strongly acidic medium. The X-ray structure of I was determined and shows conjugation between the ferrocene moiety and the thioamido group. Compound I reacts with chloroacetylferrocene affording 2,4-diferrocenylthiazole, whose structure was determined by X-ray diffraction and electronic properties studied by cyclic voltammetry. (c) 2005 Elsevier B.V. All rights reserved.
Ferrocenyl and pyrenyl thioimidates bearing terminal acetylenic groups. Synthesis and “click” reaction with 3'-azido-3'-deoxythymidine affording novel redox-active and fluorescent thymidine conjugates
摘要:
Thioamides Ar(C=S) NHCOOEt (Ar = ferrocenyl and 1-pyrenyl) obtained from ferrocene and pyrene and ethoxycarbonyl isothiocyanate react under Mitsunobu conditions with propargyl and homopropargyl alcohols, yielding the corresponding N-(ethoxycarbonyl)thioimidates containing a terminal acetylene functionality. These compounds undergo Cu(I)-catalyzed "click reaction" with 3'-azido-3'-deoxythymidine (AZT) affording novel redox-active ferrocenyl and fluorescent, environmentally sensitive pyrenyl thymidine conjugates.
Reaction of ferrocenecarbothioamide and N-(ethoxycarbonyl)ferrocenecarbothioamide with alkyl halides
作者:Anna Wrona、Marcin Palusiak、Janusz Zakrzewski
DOI:10.1016/j.jorganchem.2007.10.049
日期:2008.1
Reaction of ferrocenecarbothioamide and N-(ethoxycarbonyl)ferrocenecarbothioamide with alkyl (mainly benzyl) halides in the presence of K2CO3 has been studied. The former compound yielded cyanoferrocene in high yield whereas the latter was transformed into the corresponding thioimidates as a result of S-alkylation and deprotonation. The molecular structure of S-p-nitrobenzyl-N-(ethoxycarbonyl)-ferrocenethioimidate was determined by single-crystal X-ray analysis and revealed the E configuration. The plausible reaction mechanism is discussed. (C) 2007 Elsevier B.V. All rights reserved.