27377-31-7Relevant academic research and scientific papers
ASYMMETRICAL NITROGEN-40; GEMINAL SYSTEM-26. N-CHLOROHYDRAZINES
Shustov, G. V.,Tavakalyan, N. B.,Kostyanovsky, R. G.
, p. 575 - 584 (2007/10/02)
The factors determining the kinetic and thermodynamic stabilities of N-chlorohydrazines are discussed.Acyclic N-chlorohydrazines exist only as trialkyldiazenium chlorides 3a,b.Chlorination of 2-acyl-1,1-dimethylhydrazines 6a,b gave 1,4-diacyl-2,3-dimethylhexahydro-1,2,4,5-tetrazines 7a,b via hydrazyl radical intermediates, and chlorination of a 1-phenylpyrazolidin-5-one 8 gave phenylazoisovaleric esters 9a,b.Stable N-chlorohydrazines were obtained from bicyclic hydrazines; viz. the 2-chloro-1.2-diazabicyclo(2.2.2.)octan-3-one 12 and 7-chloro-1,7-diazabicyclo(2.2.1)heptane 16.The restricted inversion of N(7) in 16 and its 1-methyl quate rnary salt 21 were observed in the 13C-NMR spectra.The acyclic N-chlorohydrazinium salt 25 was isolated.
