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RISSynthesis of Pyrimido[4,5-e]tetrazolo[5,1-b] [1,3,4]thiadiazepine as a Novel Fused Heterocyclic System
Several derivatives of the novel fused seven-membered heterocyclic system of pyrimido[4,5-e]tetrazolo[5,1-b][1,3,4]thiadiazepine (5a–f) have been synthesized through the heterocyclization reaction of 2,4-dichloro-5-(chloromethyl)-6-methylpyrimidine...
Synthesis of dihydrobenzo[b]pyrimido[4,5-e][1,4]thiazepines; derivatives of a novel ring system
Several derivatives of the novel dihydrobenzo[b]pyrimido[4,5-e][1,4]thiazepine ring system have been synthesised through the initial
heterocyclisation of 2,4-dichloro-5-(chloromethyl)-6-methylpyrimidine with o-aminothiophenol followed...
Regioselective synthesis of new 5- methyl- 5Hpyrimido [ 4′,5′:4,5] [1,3] thiazino [3,2-a] perimidines
A convenient and efficient regioselective synthesis of new pyrimido [4',5':4,5] [1,3]thiazino[3,2-]perimidines is described through intermolecular heterocyclization of 2,4-dichloro-5-(chloromethyl)-6-methylpyrimidine and 1H-perimidine-2(3H...
Synthesis of pyrimido [4′,5′:5,6] [1,4] dithiepino [2,3- b] quinoxalines: Derivatives of a novel seven membered ring system
A convenient and efficient procedure for the synthesis of tetracyclic dithiepin derivatives is described
through the condensation reaction of 2,4-dichloro-5-(chloromethyl)-6- methylpyrimidine and quinoxaline-
2,3-dithiol followed...