Expeditious routes to 4-alkoxyquinazoline-2-carbonitriles and thiocarbamates viaN-arylimino-1, 2, 3-dithiazoles using microwave irradiation
T Besson, MJ Dozias, J Guillard, P Jacquault…
Index: Besson, Thierry; Dozias, Marie-Joelle; Guillard, Jerome; Jacquault, Patrick; Legoy, Marie-Dominique; Rees, Charles W. Tetrahedron, 1998 , vol. 54, # 23 p. 6475 - 6484
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Abstract
Conversion of N-arylimino-4-chloro-5H-1, 2, 3-dithiazole 11 into the 4-alkoxyquinazoline-2- carbonitriles 13a-i and of the aryl isothiocyanates 15 into aryl thiocarbamates 16a-j with sodium alkoxides in the corresponding alcohol, either by conventional thermolysis or by microwave irradiation are described and directly compared. Microwave irradiation of the solutions in open vessels in a monomode system with focused irradiation and continuous ...
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