Electrochemical oxidation of ketone acylhydrazones and their hydrogen cyanide adducts in sodium cyanide-methanol. Transformation of ketones to nitriles
Stereoselective, solvent free, highly efficient synthesis of aldo- and keto-N-acylhydrazones applying grindstone chemistry
作者:José Maurício dos Santos Filho、Savio Moita Pinheiro
DOI:10.1039/c7gc00730b
日期:——
A mild and efficientsynthesis of N-acylhydrazones has been developed, applying a simple grindstone procedure, leading to a library of 51 examples exhibiting a broad variety of structural features, 21 of them described for the first time in this paper. This methodology works without any organic solvent under the catalysis of acetic acid at room temperature, promotes the formation of essentially pure
Coordination compounds of hydrazine derivatives with transition metals. X. Cobalt(II) aroylhydrazone complexes
作者:M.F. Iskander、L. El Sayed、M.A. Lasheen
DOI:10.1016/s0020-1693(00)91704-3
日期:1976.1
Abstract The reactions of some aroylhydrazones (HL) with cobalt(II) salts were investigated and chelates of the types [Co(HL) 2 X 2 ] and [Co(L) 2 ] were isolated. Analytical data, infrared studies, magnetic moments and solution spectra as well as some conductivity measurements were used to characterise these chelates. The [Co(HL) 2 X 2 ] chelates were found to possess octahedral configuration in solid
摘要研究了某些芳香酰hydr(HL)与钴(II)盐的反应,并分离了[Co(HL)2 X 2]和[Co(L)2]类型的螯合物。使用分析数据,红外研究,磁矩和溶液光谱以及一些电导率测量来表征这些螯合物。发现[Co(HL)2 X 2]螯合物在固态下具有八面体构型,但在DMF溶液中解离。试图鉴定解离产物。暂时为中性[Co(L)2]螯合物指定了一个二聚体五坐标结构。
Benzoylhydrazones in catalytic hydrophosphorylation
作者:E. D. Matveeva、T. A. Podrugina、I. N. Kolesnikova、N. S. Zefirov
DOI:10.1007/s11172-010-0094-3
日期:2010.2
Reactions of benzoylhydrazones derived from heterocyclic and aromatic aldehydes and aliphatic, heterocyclic, and aliphatic-aromatic ketones with diethyl phosphite in the presence of [tetra(tert-butyl)phthalocyanine]aluminumchloride afford α-benzoylhydrazino phosphonates in high yields.
Coordination compounds of hydrazine derivatives with transition metals. XIV. Nickel(II) chelates with bidentate aroylhydrazones and their reactions with heterocyclic bases
作者:M.F. Iskander、S. Saddeck
DOI:10.1016/s0020-1693(00)90911-3
日期:1977.1
neutral bis(ligand)nickel(II) chelates derived from some bidentate aroylhydrazones have been prepared and characterized. Whatever the solubility permits, the reaction of the neutral bis-(ligand)chelates, NiL 2 , with some heterocyclicbases were studied spectrophotometrically in benzene solution. The stability constants as well as the thermodynamic parameters (ΔG, ΔH, ΔS) for the adduct formation reaction
Phase-Transfer Catalyzed Addition of Hydrogen Cyanide to<i>N</i>-Substituted Hydrazones
作者:Toshiro Chiba、Mitsuhiro Okimoto
DOI:10.1055/s-1990-26831
日期:——
In a two-phase system consisting of aqueous sodium cyanide and an inert organic solvent and containing a phase-transfer catalyst, ketone benzoylhydrazones, tosylhydrazones, and methoxycarbonylhydrazones upon addition of acetic acid readily add hydrogen cyanide to give 2-substituted 1-(1-cyanoalkyl)hydrazines.