5831-42-5Relevant academic research and scientific papers
Synthesis of 1, 1, 4, 4-tetraryl-1, 3-diazabutadienes by oxidation of hydrazones using bis(acetylacetonato)copper (II)
Singh,Kopo
, p. 1736 - 1737 (2007/10/03)
The treatment of benzophenone hydrazones with bis(acetylacetonato)copper(II) affords 1, 1, 4, 4-tetraryl-1, 3-diaza-butadienes in good yields. The formation of diazabutadienes is explained by the intermediacy of carbenoids generated by the Cu(acac)2
Tetraethylammonium bromide catalysed phase transfer reaction of potassium superoxide with hydrazones and tosylhydrazones
Kumar,Singh
, p. 579 - 583 (2007/10/03)
A variety of hydrazones and tosylhydrazones of carbonyl compounds have been investigated under the mild reaction conditions of potassium superoxide and tetraethylammonium bromide in dry dimethylformamide. As a result, hydrazones are generally transformed to their corresponding azines whereas tosylhydrazones undergo facile fragmentation to give the olefinic products in fairly good yields. The study highlights the use of tetraethylammonium bromide as an efficient and inexpensive catalyst for superoxide studies.
Reductive Dimerisation of Ketazines with Sodium
Singh, M. S.,Mehrotra, K. N.
, p. 208 - 209 (2007/10/02)
The reaction of benzophenoneazines (Ia, b) with sodium in dry tetrahydrofuran and subsequent addition of aq. ammonium chloride give reductive dimers (IIa, b) of azines in high yields.The reaction of Ia, b with sodium in dry dioxane followed by treatment w
Electrochemical Oxidation of Benzophenone Hydrazones
Chiba, Toshiro,Okimoto, Mitsuhiro,Nagai, Hiroshi,Takata, Yoshiyuki
, p. 2968 - 2972 (2007/10/02)
The anodic oxidation of benzophenone hydrazones (1) was found to give several products, depending upon the electrolysis conditions employed such as electrode material, temperature, and electrolyte composition.For example, the oxidation using a platinum anode at room temperature in LiClO4-MeCN afforded exclusively benzophenone azines (2), whereas in NaOMe-MeOH benzophenone dimethyl acetals (3) were formed as the main products.On the other hand, the oxidation using a graphite anode in refluxing MeOH containing NaOMe gave diphenylmethyl methyl ethers (4), along with diphenylmethanes (5).When the analogous electrolysis was conducted in the presence of methacrylic acid derivatives, corresponding diphenylcyclopropanes (7) were obtained in relatively high yields.
