Synthesis of the 5-thia-1,3,6-triazacycl[3.2.3]azine and 4-thia-1,3,6-triazacycl[3.2.3]azine systems

The syntheses, structural proofs, and chemical and spectral properties of four members of the 5-thia-1,3,6-triazacycl[3.2.3]azine system and of two members of the 4-thia-1,3,6-triazacycl[3.2.3]azine system are described. Electrophilic substitution is predicted and found to occur in the 8-position in both systems.