The chemistry of furazano-[3,4-b]pyrazine. 7. Properties of 5,6-diamino- and 5,6-dihydrazino-furazano[3,4-b]pyrazine

The reactions of 5,6-diamino- and 5,6-dihydrazinofurazano3,4-b]yrazine that produce polycyclic or highly reactive compounds are reviewed. The furazan ring has a deactivating effect on the amine functions of these compounds. Dedicated to Professor Henk van der Plas on his 70th birthday. For No. 6, see 1]. Latvian Institute of Organic Synthesis, Riga LV-1006 Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 564–573, April, 1999.