Oxidative conversion of N,N-dimethylhydrazones derived from aliphatic and heteroaromatic aldehydes into nitriles with hydrogen peroxide or 3-chloroperoxybenzoic acid
A Novel, One-Pot Synthesis of α-<i>C</i>-Cyanohydrazines in the Presence of Lithium Perchlorate/Diethylether Solution (5.0 M)
作者:Akbar Heydari、Robabe Baharfar、Mohsen Rezaie、Saied M. Aslanzadeh
DOI:10.1246/cl.2002.368
日期:2002.3
Condensation of N,N-dimethylhydrazine, an aldehyde in lithium perchlorate/diethylether solution (5.0 M) gave N,N-dimethylhydrazone, which were treated with trimethylsilyl-cyanide to afford α-C-cyanohydrazine. These compounds are important precursors of nitrogen-substituted reagents.
Highly dispersed potassium on alumina (K/Al2O3) acts as a metalatingagent towards enolizable compounds and the intermediate organopotassium derivatives can be alkylated with primary alkyl bromides. The reaction conditions are dependent on the substrate. In particular, tetrahydrofuran is the solvent of choice for the metalation of nitriles and aldehydeN,N-dimethylhydrazones at −60°C and of N-cyclohexyl
氧化铝上高度分散的钾(K / Al 2 O 3)作为可烯醇化化合物的金属化剂,中间有机钾衍生物可以用伯烷基溴化物烷基化。反应条件取决于底物。特别地,四氢呋喃是在-60℃下腈和醛N,N-二甲基hydr和N-环己基酮亚胺在室温下金属化的选择的溶剂,而己烷必须用于酮。
Gol'din,G.S. et al., Journal of Organic Chemistry USSR (English Translation), 1970, vol. 6, p. 757 - 760
作者:Gol'din,G.S. et al.
DOI:——
日期:——
Hyperbasic Media I. Metallation of Hydrazones. A Direct Synthesis of Nitriles
作者:Thérèse CUVIGNY、Jean François LE BORGNE、Marc LARCHEVÊQUE、Henri NORMANT
DOI:10.1055/s-1976-23995
日期:——
Mass Spectrometry in Structural and Stereochemical Problems. CXIII.<sup>1</sup> Specific Hydrogen Rearrangements in the Fragmentations of Hydrazones<sup>2</sup>