Water Mediated Direct Thioamidation of Aldehydes at Room Temperature
作者:Ankush Gupta、Jigarkumar K. Vankar、Jaydeepbhai P. Jadav、Guddeangadi N. Gururaja
DOI:10.1021/acs.joc.1c02307
日期:2022.3.4
A mild, greener approach toward thioamide synthesis has been developed. Its unique features include water-mediated reaction with no input energy, additives, or catalysts as well. The presented protocol is attractive with readily available starting materials and the use of different array amines, along with a scaled-up method. Biologically active molecules such as thionicotinamide and thioisonicotinamide
A new application of rhodanine as a green sulfur transferring agent for a clean functional group interconversion of amide to thioamide using reusable MCM-41 mesoporous silica
作者:Suman Ray、Asim Bhaumik、Arghya Dutta、Ray J. Butcher、Chhanda Mukhopadhyay
DOI:10.1016/j.tetlet.2013.02.045
日期:2013.4
A novel thionation protocol for amide compounds, with the system rhodanine/secondary amine has been discovered. Clean and efficient synthesis of a variety of thioamides can be achieved through this simple and convenient method using MCM-41 mesoporous silica as an acid catalyst. For this purpose we have synthesized MCM-41 silica and characterized by using an array of sophisticated analytical techniques like BET, HR TEM, EDX, XRD, 29Si MAS NMR and FTIR. This reaction is therefore a very neat example of a functional group interconversion. (C) 2013 Elsevier Ltd. All rights reserved.
Thioisomünchnones versus Acrylamides via Copper-Catalyzed Reaction of Thioamides with Diazocarbonyl Compounds
作者:Vladimir G. Ilkin、Valeriy O. Filimonov、Eugenia A. Seliverstova、Mikhail S. Novikov、Tetyana V. Beryozkina、Aleksey A. Gagarin、Nataliya P. Belskaya、Nibin Joy Muthipeedika、Vasiliy A. Bakulev、Wim Dehaen
DOI:10.1021/acs.joc.2c01352
日期:2022.9.16
was developed by intermolecular copper-catalyzed reactions of diazoacetamides with aromatic and heteroaromatic thioamides bearing a pyrrolidine moiety. The direction of the reaction can be switched toward 2-amino-2-heteroarylacrylamides by replacing the pyrrolidine with an aniline group or by the use of 2-cyano-2-diazoacetamides. The proposed mechanism and DFT calculations allowed us to rationalize the