TiO 2上负载的Au纳米颗粒催化α-二重氮羰基化合物中的苯甲酸酯向氢硅烷中的插入。建议该转化涉及两种催化活化方式:通过排出N 2在纳米粒子表面形成亲核金卡宾,以及在金纳米粒子上活化氢硅烷的Si–H键,然后进行化学吸附物质的偶联。不需要外部配体或添加剂,而该过程是纯均相的,因此可以回收和再利用催化剂。
The preparation of polymer beads by photocationic suspension co-polymerisation of 2-(arylsilyl)ethyl vinyl ethers
作者:Laurent Porres、Herv?? Deleuze、Yannick Landais
DOI:10.1039/b201520j
日期:2002.10.1
Polymer beads have been prepared by photocationic suspension polymerisation of 2-(aryldimethyl)silyl ethers in perfluorooctane in the course of our studies on polymer-supported desymmetrisation of 1-silacyclohexa-2,5-dienes. Good yields of 100–200 μm beads of satisfactory shape have been obtained using a perfluorinated co-polymer as stabilising agent. These beads have no permanent porosity although they have a high nominal cross-linking level. Their swelling in common organic solvents is comparable with those of Merrifield or TentaGel gel-type resins.
Solvolysisrates of 2-(aryldimethylsilyl)ethyl chlorides were determined conductimetrically in 60% (v/v) aqueous ethanol. The effects of aryl substituents at the silyl atom on the solvolysisrates ...
Au Nanoparticle-Catalyzed Insertion of Carbenes from α-Diazocarbonyl Compounds into Hydrosilanes
作者:Marios Kidonakis、Manolis Stratakis
DOI:10.1021/acs.orglett.8b01638
日期:2018.7.6
Supported Au nanoparticles on TiO2 catalyze the insertion of carbenesfrom α-diazocabonyl compounds into hydrosilanes. It is proposed that the transformation involves two modes of catalytic activation: formation of nucleophilic Au carbenes on the surface of nanoparticle via expulsion of N2 and activation of the Si–H bond of hydrosilane on Au nanoparticle, followed by coupling of the chemisorbed species
TiO 2上负载的Au纳米颗粒催化α-二重氮羰基化合物中的苯甲酸酯向氢硅烷中的插入。建议该转化涉及两种催化活化方式:通过排出N 2在纳米粒子表面形成亲核金卡宾,以及在金纳米粒子上活化氢硅烷的Si–H键,然后进行化学吸附物质的偶联。不需要外部配体或添加剂,而该过程是纯均相的,因此可以回收和再利用催化剂。