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2005
Amidines
P 0330
10- 056
2-Nitroguanidine Derivatives. Part 6. Synthesis and Chemical Properties of
Hydrazo- and Azobis(nitroformamidine). — The procedure for the synthesis of substrate (I) is significantly improved and the yield increased tenfold compared to the procedure previous reported. The reactions of (I) with formaldehyde and glyoxal, and also
the oxidation with different reagents to azo derivative (VI) are studied. The condensation of the latter with several β-carbonyl compounds leads to dicarboximidamides
(VIII) in good to excellent yields. — (METELKINA, E. L.; Russ. J. Org. Chem. 40
(2004) 7, 928-935; St. Petersburg Technol. Inst., St. Petersburg 198013, Russia; Eng.)
— R. Staver
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