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2004
Hydrazines
P 0080
52- 052
Novel Route to N-Alkyl- and N,N'-Dialkylhydrazines by High-Pressure Alkylation
of Azines. — High-pressure reactions of alkyl halides with appropriate azines followed
by hydrolysis of the product mixtures provides access to N-mono- [cf. (II)] or
N,N'-dialkylhydrazines [cf. (III)] depending on the structure of the starting azine and
the solvent nature. Azines containing strong electron-withdrawing groups at the benzene ring such as nitro do not react with alkyl halides under any conditions. The synthetic value of the reactions studied is illustrated with the preparation of non-symmetrical dialkylhydrazines [cf. (IV)]. — (AGAFONOV*, N. E.; DUDIN, A. V.;
PREOBRAZHENSKII, A. A.; Russ. Chem. Bull. 53 (2004) 3, 714-716; Zelinsky
Inst. Org. Chem., Russ. Acad. Sci., Moscow 117913, Russia; Eng.) — M. Schroeter
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