41097-49-8Relevant academic research and scientific papers
The Reaction of Hydrazine with α-Cyanocinnamate Esters: A Caveat
Erdman, Paul J.,Gosse, Jimmy L.,Jacobson, Jamey A.,Lewis, David E.
, p. 1163 - 1171 (2004)
α-Cyanocinnamate esters react with hydrazine to give initial products of conjugate addition that then undergo a fragmentation to give the azine of the carbonyl precursor to the starting ester, rather than intramolecular aminolysis to give the pyrazolidino
Rapid, chemoselective and facile synthesis of azines by hydrazine/I2
Nanjundaswamy,Pasha
, p. 3417 - 3420 (2008/02/13)
We report the reaction of hydrazine hydrate with carbonyl compounds in the presence of molecular iodine at 0-10°C, which affords symmetrical azines in excellent yields in 1 to 4 min without any adverse effect on other substituents. The reactions are rapid and chemoselective, afford excellent yields, and have high-purity products. The workup procedure is environmentally benign and does not require solvent extraction. Copyright Taylor & Francis Group, LLC.
Selective protection of carbonyl compounds as azines and their facile regeneration
Nanjundaswamy,Pasha
, p. 3161 - 3165 (2007/10/03)
Carbonyl compounds with freshly prepared hydrazinium formate successfully yielded the corresponding azines in excellent yields. In turn, azines were deprotected to the corresponding carbonyls using triethylammonium chlorochromate chemoselectively. Copyright Taylor & Francis Group, LLC.
Aspects of acyclic azine chemistry -- I. The effect of structure and solvents on the electronic absorption spectra of benzaldazine, o-, m- and p-hydroxybenzaldazines
Okafor, E. Chukwuemeka
, p. 207 - 212 (2007/10/02)
The electronic absorption spectra of benzaldazine, o-, m-, and p-hydroxybenzaldazines have been separately examined in various solvents (20 solvents and solvent mixtures).The observed three groups of bands designated as α (200-225 nm), β (289-307 nm) and γ (352-375 nm) are attributed to ?* IAu IAg) are out-of-plane (Ξ) polarized while all ?* IBu IAg) are in plane (x,y) polarized.In the rationalization of data, the theory of resonance has been employed where deemed useful.The shifts of bands with solvents have been traced.
