1,3,4-Thiadiazines represent the most widely studied class of compounds among the six

theoretically possible thiadiazine isomers; they are of interest in a chemical sense

because they are labile compounds which are capable...

pyrimido[5, 4-e][1,3,4] thiadiazines or pyrimido[4, 5-e][1,3,4] thiadiazines?...

of views.

We here now describe a method for the synthesis of novel heterocyclic ring system of

1,2,4-teriazoles fused to pyridazino[4,3-e][1,3,4]thiadiazine. Initially, the treatment of

compound (1) with phenylisothiocyanate afforded...

Synthesis of pyrimido[5,4,-b]1,3,4 thiadiazine is limited to only one patent literature of A.

J. Eliot1. Recently we exhibited a new approach for the addition of 1, 3, 4 thiadiazine to

quinoxaline moiety2. Now we have extended...

Convenient synthesis of new pyrimido[4,5-e][1,3,4]thiadiazine derivatives...

Pyrimido [4,5-e][1,3,4]thiadiazines have the ditinct biological activities which promoted us to make an unused method and derivatives for the synthesis of them. These compounds have the potential of being nucleoside analogues, [1...

New Route to pyrimido[4,5-e][1,3,4] thiadiazine Derivatives...

One-pot synthesis of pyrimido[4,5-e][1,3,4]thiadiazines through heterocyclization of 5-bromo-2-chloro-6-methyl-4-(1-methylhydrazino) pyrimidine with arylisothiocyanates is reported....

the new heterocyclic systems of pyridazino[4,3-e][1,2,4]triazolo[3,4-b][1,3,4]thiadiazine. In this study, the prepared 4-bromo-3,6-dichloropyridazine was reacted with in acetonitrile which was subsequently treated with secondary amines and cyclized...

. The substitution of chlorine atom with secondary amines was also investigated and the resulting products were cyclized on treatment with NaNH2 in CH3CN to give various new derivatives of 3,6-dimethyl-5H-pyrimido[4,5-e][1,2,4]triazolo[3,4b][1,3,4] thiadiazines....