694-83-7Relevant articles and documents
Photoinduced Rapid Multicomponent Cascade Reaction of Aryldiazonium Salts with Unactivated Alkenes and TMSN3
Shen, Jiabin,Xu, Jun,He, Lei,Ouyang, Yani,Huang, Lin,Li, Wanmei,Zhu, Qing,Zhang, Pengfei
, p. 1204 - 1208 (2021)
The first example of a photoinduced rapid multicomponent cascade reaction of aryldiazonium salts with unactivated alkenes and trimethylsilyl azide (TMSN3) under oxidant-free conditions is described. This approach provides the synthetic route for a wide range of unsymmetric azo compounds. The compounds are obtained in good to excellent yields under mild reaction conditions. This transformation is applicable to various aryldiazonium salts and alkenes, providing an alternative route for the synthesis of unsymmetric azo compounds. The control experiment demonstrates that the reaction mechanism follows a radical pathway.
Preparation method of 1, 2-cyclohexanediamine
-
Paragraph 0053-0075, (2018/09/13)
The invention relates to a preparation method of 1, 2-cyclohexanediamine. The preparation method includes: mixing a catalyst, liquid ammonia and water; in an oxygen-free environment, dropwise adding acyclohexene oxide raw material at 60-110 DEG C, allowing reaction until pressure is constant, feeding hydrogen, and allowing reaction again at 110-120 DEG C until the pressure is constant again to obtain reaction liquid; separating and purifying the reaction liquid to obtain 1, 2-cyclohexanediamine. Epoxy which is excessive in capacity is used as the raw material, water is combined as an accelerant, stepped temperature rise is controlled, and liquid ammonia is added in one time and mixed with the catalyst and the water to enable cyclohexene oxide to react with liquid ammonia to generate 1, 2-cyclohexanediamine, so that downstream application of cyclohexene oxide is expanded, a stable source is provided for 1, 2-cyclohexanediamine, and cost is lowered.
Method for synthesizing trans-cyclohexyldiamine
-
, (2017/08/29)
The invention discloses a method for synthesizing trans-cyclohexyldiamine. The method comprises the following steps: by using epoxy cyclohexane as the raw material, carrying out ring opening with ammonia water, adding sulfuric acid for dewatering and salification, adding free alkali, carrying out ring opening with ammonia water, and distilling to obtain the trans-cyclohexyldiamine. The method has the advantages of high repetitiveness of the synthesis route, and simple and accessible raw materials, and provides an alternative scheme for obtaining the trans-cyclohexyldiamine pure product.