473-55-2Relevant articles and documents
The Exploration of Sensitive Factors for the Selective Hydrogenation of α-Pinene Over Recyclable Ni-B/KIT-6 Catalyst
Deng, Qiao,Hu, Tianding,Huang, Jinyan,Huang, Pengpeng,Jiang, Lihong,Shan, Shaoyun,Su, Hongying,Wang, Yaming,Yang, Wenjuan,Zheng, Yane,Zhi, Yunfei
, (2021/10/08)
The supported Ni-B/KIT-6 amorphous alloy catalyst was prepared by chemical reduction method for the hydrogenation reaction of α-pinene. The catalyst was characterized by XRD, BET, SEM–EDS, TEM, XPS, ICP and DLS, the influences of single factor of catalyst on its structure, morphology and performance were investigated and analyzed. It was found that the amount of Ni loading, preparation pH and B/Ni molar ratio had great effects on the reduction amount, dispersion and specific surface area of the catalyst, resulted in affecting the catalytic performance of the catalyst. The optimum synthesis conditions were at m(Ni2+)/m(KIT-6) = 1:3, pH 13 and n(B)/n(Ni) = 1.5, obtaining a 90.62% conversion of α-pinene and 97.67% selectivity of cis-pinane. In addition, the catalysts also exhibited better repeatability and stability. Graphic Abstract: [Figure not available: see fulltext.]
Amine-Borane Dehydrogenation and Transfer Hydrogenation Catalyzed by α-Diimine Cobaltates
Maier, Thomas M.,Sandl, Sebastian,Shenderovich, Ilya G.,Jacobi von Wangelin, Axel,Weigand, Jan J.,Wolf, Robert
supporting information, p. 238 - 245 (2019/01/04)
Anionic α-diimine cobalt complexes, such as [K(thf)1.5{(DippBIAN)Co(η4-cod)}] (1; Dipp=2,6-diisopropylphenyl, cod=1,5-cyclooctadiene), catalyze the dehydrogenation of several amine-boranes. Based on the excellent catalytic properties, an especially effective transfer hydrogenation protocol for challenging olefins, imines, and N-heteroarenes was developed. NH3BH3 was used as a dihydrogen surrogate, which transferred up to two equivalents of H2 per NH3BH3. Detailed spectroscopic and mechanistic studies are presented, which document the rate determination by acidic protons in the amine-borane.
Efficient and selective reduction of α-pinene to cis-pinane by NaBH4 using NiCl2?6H2O/PEG-800/ethanol as the catalytic system
Li, Kaoxue,Wang, Kang,Liu, Chuanchao,Yang, Xuhao,Chen, Xia,Ren, Yang,Cao, Shuhua,Liu, Meifang,Tai, Xishi,Li, Fahui
, p. 672 - 678 (2019/02/16)
The reduction of α-pinene by NaBH4 was achieved using NiCl2?6H2O in PEG-800/ethanol system under room temperature. Under the optimized conditions, the conversion of α-pinene and the selectivity of cis-pinane reached 97% and 98%, respectively. On the basis of TEM and a series of poisoning experiments, the nature of the active catalytic species for the reaction was discussed.
