Straightforward and Highly Efficient Catalyst-Free One-Pot Synthesis of Dithiocarbamates under Solvent-Free Conditions
作者:Najmedin Azizi、Fezzeh Aryanasab、Mohammad R. Saidi
DOI:10.1021/ol0620141
日期:2006.11.9
[Structure: see text] A highlyefficient and simple synthesis of dithiocarbamates is possible based on the one-pot reaction of amines, CS2, and alkyl halides without using a catalyst under solvent-free conditions. The mild reaction conditions, high yields, and broad scope of the reaction illustrate the good synthetic utility of this method. The reaction is a highly atom-economic process for production
Dithiocarbamate as an efficient intermediate for the synthesis of 2-amino-1,3,4-thiadiazoles in water
作者:Fezzeh Aryanasab、Azim Ziyaei Halimehjani、Mohammad R. Saidi
DOI:10.1016/j.tetlet.2009.11.100
日期:2010.2
A new and facile protocol for the synthesis of 2-amino-1,3,4-thiadiazoles in water is described. Reaction of acid hydrazides with easily prepared dithiocarbamates gives the corresponding thiadiazoles in moderate to excellent yields. 2-Amino-1,3,4-oxadiazoles were not observed as side products using this procedure.
A new facile synthetic method for the construction of 1,3-oxathiolan-2-ylidenes
作者:Harisadhan Ghosh、C.B. Singh、Siva Murru、Veerababurao Kavala、Bhisma K. Patel
DOI:10.1016/j.tetlet.2008.02.103
日期:2008.4
A new, convenient and efficient syntheticmethod for the construction of 1,3-oxathiolan-2-ylidenes via sodium borohydride reduction of the addition product of dithiocarbamic acid esters with α-bromoketones under basic conditions is reported. This method is general and applicable to a range of systems.
pH-dependent isomerism of (Iso)thioureidomethylenebisphosphonates
作者:A. L. Chuiko、L. P. Filonenko、A. N. Borisevich、M. O. Lozinskii
DOI:10.1134/s1070363209010113
日期:2009.1
Isomerism of thioureas bearing a methylenebisphosphonic group was studied. It was shown that a change in the ionization degree of the bisphosphonic group affects the strength of intramolecular hydrogen bonds and Z/E ratio in the solution.
326. Heterocyclyl-rhodanines and -2-thiohydantoins