Expeditious one-pot three component synthesis of N-aryl dithiocarbamate derivatives using mesoporous Cu-materials
摘要:
In this study, a facile one-pot three component protocol has been demonstrated for the preparation of synthetically challenging N-aryl dithiocarbamate derivatives using mesoporous Cu-materials as catalyst at room temperature. The mesoporous Cu-catalysts namely Cu-MCM-41, Cu-MCM-48, and Cu-SBA-15 were prepared by impregnation of Cu-salts on the synthesized mesoporous materials and were characterized by powder X-ray diffraction, N-2 adsorption-desorption, and transmission electron microscopic studies. Significant improvement of yields was obtained using mesoporous Cu-catalysts under milder reaction conditions compared to the earlier reported catalysts. All the three mesoporous Cu-catalysts showed comparative reactivity however a little higher yield was obtained using Cu-MCM-48. (C) 2015 Elsevier Ltd. All rights reserved.
An efficient synthesis of aryldithiocarbamic acid esters from Michael addition of electron-deficient alkenes with arylamines and CS2 in solid media alkaline Al2O3
作者:Shuai Xia、Xin Wang、Ze-mei Ge、Tie-ming Cheng、Run-tao Li
DOI:10.1016/j.tet.2008.11.084
日期:2009.1
An efficient synthesis of dithiocarbamic acid esters from Michael addition of electron-deficient alkenes with arylamines and CS2 in solid media alkaline Al2O3 was presented. This method was suitable for a wide range of amines and a variety of Michael receptors. Specially, a series of aryldithiocarbamic acid esters was obtained from arylamines through this method. The protocol offers clean reactions and high yields with simple experimental procedures. Besides, the alkaline Al2O3 could be reused. (C) 2008 Elsevier Ltd. All rights reserved.
OH<sup>−</sup>/Silica-Mediated One-Pot Synthesis of Dithiocarbamates Under Solvent-Free Conditions
An efficient, versatile, and environmentally benign method for the synthesis of dithiocarbamates under solvent-free conditions is reported. The Michael addition of electron-deficient alkenes with alkyl or aryl amines and CS2 in the presence of OH-/silica in a one-pot three-component reaction protocol gave the corresponding dithiocarbamates in good to excellent yields. This method is suitable for a wide range of amines and a variety of Michael acceptors in solvent-free conditions. The results of the present work show the desired products in excellent yields.
Expeditious one-pot three component synthesis of N-aryl dithiocarbamate derivatives using mesoporous Cu-materials
作者:Soumen Payra、Arijit Saha、Rui Peng、Chia-Ming Wu、Ranjit T. Koodali、Subhash Banerjee
DOI:10.1016/j.tetlet.2015.01.158
日期:2015.3
In this study, a facile one-pot three component protocol has been demonstrated for the preparation of synthetically challenging N-aryl dithiocarbamate derivatives using mesoporous Cu-materials as catalyst at room temperature. The mesoporous Cu-catalysts namely Cu-MCM-41, Cu-MCM-48, and Cu-SBA-15 were prepared by impregnation of Cu-salts on the synthesized mesoporous materials and were characterized by powder X-ray diffraction, N-2 adsorption-desorption, and transmission electron microscopic studies. Significant improvement of yields was obtained using mesoporous Cu-catalysts under milder reaction conditions compared to the earlier reported catalysts. All the three mesoporous Cu-catalysts showed comparative reactivity however a little higher yield was obtained using Cu-MCM-48. (C) 2015 Elsevier Ltd. All rights reserved.
Practical approach to 2-thioxo-2,3-dihydroquinazolin-4(1 H )-one via dithiocarbamate–anthranilic acid reaction
作者:Najmedin Azizi、Mahtab Edrisi
DOI:10.1016/j.cclet.2016.06.012
日期:2017.1
)-one derivatives from dithiocarbamate chemistry. The method involves the reaction of anthranilic acid derivatives (2-aminobenzoic acid, 2-aminobenzamide and isatoic anhydride) with various dithiocarbamate derivatives using ethanol as solvent. The main advantages of this protocol include practical simplicity, good to high yields, and ease of product isolation, purification and cheapness of the solvent