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Reaction of substituted 1-methylthio-4,5-dihydro[1,2]dithiolo[3,4-c]quinolin iodides with arylamines. Synthesis of novel 1,2-dithiolo[3,4-c]quinolin-1-ylidene(aryl)amines and 10-(arylimino)-7,10-dihydro[1,2]dithiolo[3,4-c]pyrrolo[3,2,1-ij]quinoline-4,5-diones

“…In order to extend our studies of 1,2-dithiolo[3,4-c]quinoline-1-thione chemistry [20][21][22][23][24] , we have carried out the reactions of 1,2-dithiolothiones 1 and their methylthiodithiolium salts 2 with arylamines. In addition, we optimized the conditions of the latter reaction, convincingly proved the structure of the resulting products and studied their chemical properties in the reaction of acylation by oxalyl chloride.…”

Reaction between isocyanides and dialkyl acetylenedicarboxylates in the presence of 4,5-diphenyl-1,3-dihydro-2H-imidazol-2-one. One-pot synthesis of 5H-imidazo[2,1-b][1,3]oxazine derivatives

“…[3][4][5][6][7] Only a few synthetic methods have been reported for the preparation of imidazo[2,1-b] [1,3]oxazine ring systems. [8][9][10][11] As part of our current studies on the development of new routes in heterocyclic synthesis, [12][13][14][15] in this paper we wish to report a facile synthesis of functionalized imidazo[2,1-b]- [1,3]oxazines.…”