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| 1 | PtAu bimetallic nanocatalyst for selective hydrogenation of alkenes over aryl halides显示文摘Herein,we present a new strategy that for the first time achieved chemo- and enantio-selective hydrogenation of alkenes over arylhalides.Key to the success is that instead of using external poisons,we use the composition of the bimetallic nanocrystal catalysts to control chemoselectivity (hydrogenation of C=C bonds without cleavage of Ar-X bonds).We further show that this system combined with surface modifying chiral ligands can control the enantioselectivity.Thus,after synthesizing and screening a series of easily accessible MxAuy (M = Pd,Pt;x,y= 1,3,5) bimetallic nanocrystals (9-10 nm) supported on activated carbon,we identified that PtiAui/C is a recyclable and generally applicable catalyst for the chemoselective hydrogenation of alkenes without cleaving aryl halogen bonds.Furthermore,cinchonidine modified Pt,Aui/C is shown to be capable of enantioselective hydrogenation,as illustrated by the rapid and enantio-enriched synthesis of RIP1 inhibitor analogue 7-Br-O-Necl. | Le Guo Junjie Mao Shuangxi Guo Qi Zhang Shuangfei Cai Wei He | 2019 | Nano Research2019，12，7： | 1 |
| 2 | 苯乙炔选择性加氢催化剂及制备技术研究进展显示文摘苯乙烯是一种重要的基础有机化工原料,主要用来生产各种合成树脂、弹性体等,用途非常广泛。从载体、贵金属催化剂、非贵金属催化剂3方面,对苯乙炔选择加氢制备苯乙烯所用催化剂的最新研究进展进行详细叙述,介绍了不同载体、活性组分、制备方法对苯乙炔加氢活性和苯乙烯选择性的影响,并对苯乙炔催化反应活性和苯乙烯选择性进行调控。 | 胡晓丽 付含琦 董万军 孙凯 孙利民 | 2023 | 当代化工2023，52，8： | 0 |
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