and cyclohexane) and the relative rate of O—H insertion into methanol to stereospecific cyclopropanation of the olefin to C—H insertion into cyclohexane are calculated from the ratios of products and substrates. It is found (i) that the reactivities of the substrates decrease in the order of methanol, olefin and cyclohexane and (ii) that electron-donating substituents generally lead to reaction with
Reductive coupling of aromatic oxims and azines to 1,2-diamines using Zn-MsOH or Zn-TiCl 4
作者:Naoki Kise、Nasuo Ueda
DOI:10.1016/s0040-4039(01)00178-2
日期:2001.3
The reduction of aromatic aldoxims and azines with Zn in the presence of MsOH or TiCl4 afforded N.N'-unsubstituted 1,2-diamines in one-step. The reductive coupling with Zn-MsOH gave meso 1,2-diamines selectively, whereas cll 1,2-diamines were formed selectively by the reduction with Zn-TiCl4. (C) 2001 Elsevier Science Ltd. All rights reserved.
Synthesis of 4,4'-Dicyanostilbene
作者:Shou-Cheng Fu、Peter P. T. Sah
DOI:10.1021/ja01258a501
日期:1942.6
4,4'-Dicyanobenzaldazine
作者:H. J. Barber、R. Slack
DOI:10.1021/ja01249a502
日期:1943.9
Ionic hydrogenation of azines: An efficient synthesis of 1,2-dialkylhydrazines
作者:Dario Perdicchia
DOI:10.1016/j.tet.2023.133432
日期:2023.6
An efficient synthetic method of ionic hydrogenation of azine to the corresponding 1,2-dialkylhydrazines was accomplished. Reaction time was fast and isolation and purification of the 1,2-dialkylhydrazines were operationally simple. Yields were almost quantitative for most of the products with good functional group tolerance. Moreover, the byproduct of reduction gave the opportunity for the selective