450-62-4Relevant articles and documents
Method for selective catalytic hydrogenation of aromatic heterocyclic compounds in non-hydrogen participation manner
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Paragraph 0025-0029; 0105-0109, (2021/08/19)
The invention discloses a method for selective catalytic hydrogenation of aromatic heterocyclic compounds in a non-hydrogen participation manner. The method comprises the following steps: by taking 1, 5-cyclooctadiene iridium chloride dimer as a catalyst and phenylsilane as a hydrogen source, carrying out stirring reaction under mild conditions without adding a ligand, namely catalytically hydrogenating the aromatic heterocyclic compounds to obtain hydrogenated products of the aromatic heterocyclic compounds. The method has the advantages of low cost, mild reaction conditions, high selectivity and the like, and special equipment such as a high-pressure kettle and the like and high-temperature conditions which are required when hydrogen is used are avoided.
Ni0/Niδ+ Synergistic Catalysis on a Nanosized Ni Surface for Simultaneous Formation of C-C and C-N Bonds
Zhang, Jian,An, Zhe,Zhu, Yanru,Shu, Xin,Song, Hongyan,Jiang, Yitao,Wang, Wenlong,Xiang, Xu,Xu, Linlin,He, Jing
, p. 11438 - 11446 (2019/11/21)
Simultaneous formation of C-C/C-N bonds provides insight into the bottom-up synthesis of N-heterocycles. This work reports Ni0/Niδ+ synergistic catalysis on the surface of Ni nanoparticles for the highly efficient one-pot formation of C-C/C-N bonds, affording 1,2,3,4-tetrahydroquinoline and its derivatives from 2-amino benzyl alcohol and ethanol without any addition of liquor base or external hydrogen. Ni0/Niδ+ synergistic catalysis has been achieved by regulating the Ni particle size or activating the Ni surface with O2. In the dehydrogenation of -CH2-OH to -CH=O, the formation of C==C and C=N bonds via concurrent cross-condensation, and the transformation of C=C/C=N to C-C/C-N via hydrogen transfer, ethanol dehydrogenation has been found to be the rate-determining step. Reducing the Ni particle size effectively increases the number of surface Niδ+ sites, which accelerates catalytic dehydrogenation through synergistic catalysis between surface Niδ+ and Ni0 sites. The number of surface Niδ+ sites can be further increased by appropriately activating the Ni surface with O2
Iron-catalysed sequential reaction towards α-aminonitriles from secondary amines, primary alcohols and trimethylsilyl cyanide
Shen, Hang,Hu, Liangzhen,Liu, Qing,Hussain, Muhammad Ijaz,Pan, Jing,Huang, Mingming,Xiong, Yan
supporting information, p. 2776 - 2779 (2016/02/19)
We have developed a one-pot iron-catalysed sequential reaction of secondary amines with primary alcohols, trimethylsilyl cyanide and TBHP under mild reaction conditions to give the corresponding α-aminonitriles.
