5093-29-8Relevant academic research and scientific papers
Synthesis of Functionally Substituted 1,3-Diaza-1,3-butadienes
Mazumdar, S. N.,Mahajan, M. P.
, p. 417 - 419 (2007/10/02)
Three methods for the synthesis of various stable 1,3-diaza-1,3-butadienes from easily available thiourea derivatives are reported.
N'-Substituted N-Acyl- and N-Imidoyl-thioureas: Preparation and Conversion of N',N'-Disubstituted Compounds into 2-(N,N-Disubstituted Amino)thiazol-5-yl Ketones
Brindley, Jocelyn C.,Caldwell, Jennifer M.,Meakins, G. Denis,Plackett, Simon J.,Price, Susan J.
, p. 1153 - 1158 (2007/10/02)
Known methods were developed to give convenient general procedures for preparing N-acyl-N'-mono- and -N',N'-disubstituted thioureas from acid chlorides, and related N-imidoyl thioureas from imidoyl chlorides.In the products from three acid chlorides and ammonium thiocyanate the acyl isothiocyanates did not appear to be accompained by the isomeric thiocyanates.Treatment of N-(anilino)benzylidene-N',N'-disubstituted thioures with chloroacetone in the presence of triethylamine leads to 5-acetyl-4-phenyl-2-(N,N-disubstituted amino)thiazoles.In contrast, the corresponding N-benzoyl thioureas form only small amounts of these compounds; the main products are the 5-benzoyl-4-methyl isomers, and this unexpected outcome requires a revision of the literature.It is thought that formation of the 5-benzoyl-4-methylthiazoles involves N-C(4) fission of a cyclic intermediate to give an open-chain intermediate in which nucleophilic attack can occur at either the acetyl or the benzoyl group.One of the latter intermediates was generated directly from 2-acetyl-2-bromoacetophenone and N-methyl-N-phenylthiourea, and found to give the 5-benzoyl-4-methyl- and 5-acetyl-4-phenyl-thiazoles as the major and minor products, respectively.
REAKTIONEN AN NICKEL(II)KOORDINIERTEN N-ACYLTHIOHARNSTOFFEN MIT SAEURECHLORIDEN: EIN EINFACHER ZUGANG FUER NEUE THIOHARNSTOFF-DERIVATE
Beyer, L.,Hartung, J.,Widera, R.
, p. 405 - 412 (2007/10/02)
The reaction of transition metal coordinated N,N-dialkylsubstituted N'-benzoyl thioureas with electrophilic agents differs from the reaction of the non-coordinated ligands.The nickel(II)chelates 1 form with organic acid chlorides RCOCl the N',N'-diacylate
