FUNCTIONALIZED MAGNETIC NANOPARTICLE, A CATALYST, A METHOD FOR FORMING C-C BONDS
申请人:KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
公开号:US20180099987A1
公开(公告)日:2018-04-12
A functionalized magnetic nanoparticle including an organometallic sandwich compound and a magnetic metal oxide. The functionalized magnetic nanoparticle may be reacted with a metal precursor to form a catalyst for various C—C bond forming reactions. The catalyst may be recovered with ease by attracting the catalyst with a magnet.
Palladium-Catalyzed Cyclization of 6-Aminohex-1-yne
作者:Thomas E. Müller、Michael Berger、Manja Grosche、Eberhardt Herdtweck、Franz P. Schmidtchen
DOI:10.1021/om010524n
日期:2001.10.1
IR and NMR spectroscopy, were used to obtain evidence for a possible reaction cycle. It seems likely that (i) the substrate initially coordinates via the amine group and (ii) an intermediate is formed which is the product of a nucleophilic attack of the amine on a coordinated alkyne. Addition of an acid to the reaction mixture led to a strong increase in the reaction rate, probably by accelerating protolytic
以6-氨基己-1-炔环合成2-甲基-1,2-脱氢哌啶为例,研究了钯催化炔烃加成胺的机理和限制因素。络合物[Pd(Triphos)](CF 3 SO 3)2在一系列结构上和电子上不同的钯配合物中,具有最高的催化活性。几种方法,例如量热法和原位红外光谱和核磁共振光谱法,被用来获得可能的反应周期的证据。似乎(i)底物最初通过胺基团进行配位,并且(ii)形成了中间体,该中间体是胺对配位炔的亲核攻击的产物。向反应混合物中添加酸可导致反应速率显着提高,这可能是通过加速中间体复合物中钯-碳键的蛋白水解裂解来实现的。
Ruthenium-Catalyzed Asymmetric Hydrosilylation of Ketones and Imine
(oxazolinylferrocenyl)phosphines, RuCl2(PPh3)((oxazolinylferrocenyl)phosphine), have been prepared and characterized by spectroscopy. These ruthenium complexes are very effective catalysts for asymmetrichydrosilylation of not only ketones but also an imine to give the corresponding sec-alcohols (up to 97% ee) and a sec-amine (88% ee) after acid hydrolysis, respectively.
Oxidative Addition of Dihydrogen to [Ir(bisphosphine)(1,5-cyclooctadiene)]BF<sub>4</sub> Complexes: Kinetic and Thermodynamic Selectivity
作者:Barbara F. M. Kimmich、Ekasith Somsook、Clark R. Landis
DOI:10.1021/ja981536b
日期:1998.10.1
diastereomeric [Ir(chiral bisphosphine)(H)2(COD)]+ complexes at −80 °C is kinetically controlled and varies substantially with the structure of the diphosphine. In one instance (chiral bisphosphine = CHIRAPHOS), the kinetic and thermodynamic selectivities of H2 addition are inverted; i.e., the dominant kineticproduct is thermodynamically less stable than the minor kineticproduct. For the [IrH2(Me-DuPhos)(COD)]+