Asymmetric Transfer Hydrogenation of 1-Naphthyl Ketones by an ansa-Ru(II) Complex of a DPEN-SO2N(Me)-(CH2)2(η6-p-Tol) Combined Ligand
摘要:
The first second-generation designer Ru(II) catalyst 1b featuring an enantiopure N,C-(N-ethylene-N-methyl-sulfamoyI)-tethered (DPEN-k(2)N,N)/n(6)toluene hybrid ligand Is introduced. Using an SIC 1000 in HCO2H Et3N 5:2 transfer hydrogenation medium, secondary 1-naphthyl alcohols are obtained in up to >99.9% ee under mild conditions. Mechanistic factors are discussed.
Iridium phosphine abnormal N-heterocyclic carbene complexes in catalytic hydrogen transfer reactions
作者:Xue Gong、Hong Zhang、Xingwei Li
DOI:10.1016/j.tetlet.2011.08.058
日期:2011.10
active catalysts for transfer hydrogenation of ketones or enones, dehydrative C–C coupling between primary and secondary alcohols, and dehydrogenation of benzylalcohol to benzyl benzoate. In the transfer hydrogenation of acetophenone, abnormal NHC complexes give higher activity than a normal analogue. Dehydrative C–C coupling reactions between primary and secondary alcohols result in β-alkylation of the
herein an unprecedented highly efficient Guerbet‐type reaction at room temperature (catalytic TON up to >6000). This β‐alkylation of secondary methyl carbinols with primary alcohols has significant advantage of delivering higher‐order secondary alcohols in an economical, redox‐neutral fashion. In addition, the first enantioselective Guerbet reaction has also been achieved using a commercially available
[EN] COMPOSITIONS CONTAINING FLUORENE SUBSTITUTED TRIAZINE DERIVED COMPOUNDS, AND ELECTRONIC DEVICES CONTAINING THE SAME<br/>[FR] COMPOSITIONS CONTENANT DES COMPOSÉS DÉRIVÉS DE TRIAZINE À SUBSTITUTION FLUORÈNE, ET DISPOSITIFS ÉLECTRONIQUES LES CONTENANT
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:WO2015073343A1
公开(公告)日:2015-05-21
The invention provides a composition comprising at least one fluorene substituted triazine derived compound of Formula 1, as described herein, and electronic devices containing the same. Such devices have improved efficiency and better driving voltage.
Copper‐Catalyzed Enantioselective C(sp<sup>3</sup>)−SCF<sub>3</sub> Coupling of Carbon‐Centered Benzyl Radicals with (Me<sub>4</sub>N)SCF<sub>3</sub>
作者:Wei Zhang、Yu Tian、Xiao‐Dong Liu、Cheng Luan、Ji‐Ren Liu、Qiang‐Shuai Gu、Zhong‐Liang Li、Xin‐Yuan Liu
DOI:10.1002/anie.202319850
日期:2024.3.11
A copper-catalyzed enantioselective radical C(sp3)−SCF3 coupling of secondary/tertiary benzyl radicals with the easily available (Me4N)SCF3 reagent was developed to afford enantioenriched trifluoromethylthiolated molecules. The key to the success lies in the utilization of chiral phosphino-oxazoline-derived anionic N,N,P-ligands for the reaction initiation and enantioselectivity.