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2005
Guanidine derivatives
P 0510
2-Nitroguanidine Derivatives. Part 8. Synthesis and Cyclizations of
1
,N'2-Bis(N2-nitrocarbamimidoyl) Dicarboxylic Acid Dihydrazides and Ethyl
24- 067 N'
[2-(N2-Nitrocarbamimidoyl)hydrazino](oxo)acetate. — Nitrocarbamimidoyl hydrazides (III), (VI), and (IX) are obtained in excellent yields by a novel procedure from
the corresponding hydrazides and nitrosoguanidine derivative (II). The cyclization of
compounds (III), (VI), and (IX) in the presence of bases provides access to a variety of
triazoles [cf. compounds (IV), (VII), (X), (XII)]. — (METELKINA, E. L.;
NOVIKOVA, T. A.; Russ. J. Org. Chem. 40 (2004) 12, 1737-1743; St. Petersburg
State Inst. Technol., St. Petersburg 198013, Russia; Eng.) — R. Staver
2005
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