was indirectly verified by the structures of 10–12. To our delight, the addition of pyridine N-oxide reversed the selectivity of the reaction, from anti-Markovnikov to Markovnikov addition. At the same time, the reaction temperature was reduced from 70 to 30 °C on the premise of high yield and excellent selectivity. However, this catalytic system is only applicable to aromatic alkenes. On the basis
六甲硅烷基钴(III)氢化物1 - 6与[PSIP]钳配体具有在所述P个不同的取代基和Si原子([(2-PH 2 PC 6 H ^ 4)2 MeSiCo(H)(Cl)的(PME 3)] (1),[(2-Ph 2 PC 6 H 4)2 HSiCo(H)(Cl)(PMe 3)](2),[(2-Ph 2 PC 6 H 4)2 PhSiCo(H)(Cl )(PMe 3)](3),[(2- i Pr 2 PC 6 H4)2 HSiCo(H)(Cl)的(PME 3)](4),[(2-我镨2 PC 6 H ^ 4)2 MeSiCo(H)(Cl)的(PME 3)](5),和[ (2- i Pr 2 PC 6 H 4)2 PhSiCo(H)(Cl)(PMe 3)](6)是通过配体(L1 - L6)与CoCl(PMe 3)3经由Si反应合成的-H键裂解。化合物1 - 6具有对烯烃氢化硅烷化的催化活性,其中配合
Lewis acid promoted dehydration of amides to nitriles catalyzed by [PSiP]‐pincer iron hydrides
also the first example that dehydration of primary amides to nitriles was catalyzed by silyl hydrido iron complexes bearing [PSiP]‐pincer ligands with Lewis acid as additive. This catalytic system has good tolerance for many substituents. Among the four iron hydrides 1 is the best catalyst. The effects of substituents of the [PSiP]‐pincer ligands on the catalytic activity of the iron hydrides were
使用四种[PSiP]-夹钳式氢化铁配合物1-4 [(2-Ph 2 PC 6 H 4)2 MeSiFe(H)(PMe 3)2(1),(2- Ph 2 PC 6 H 4)2 HSiFe(H)(PMe 3)2(2),(2-(iPr)2 PC 6 H 4)2 HSiFe(H)(PMe 3)2(3)和(2‐ (iPr)2台电脑以(EtO)3 SiH作为脱水剂的存在,以良好至极好的收率研究了作为催化剂的6 H 4)2 MeSiFe(H)(PMe 3)2(4)] 。首次证明路易斯酸可以在比其他路易斯酸促进的体系温和的反应条件下,例如较短的反应时间或较低的反应温度下,显着促进该催化体系。这也是第一个例子,即带有[PSiP] -pincer配体的甲硅烷基氢化铁络合物与路易斯酸作为添加剂催化伯酰胺脱水成腈。该催化体系对许多取代基具有良好的耐受性。在四种氢化铁中1是最好的催化剂。讨论了[PSiP]-夹子配体的取
ORGANOMETALLIC COMPOUND AND ORGANIC LIGHT EMITTING DEVICE INCLUDING THE SAME
申请人:Samsung Display Co., Ltd.
公开号:US20170077427A1
公开(公告)日:2017-03-16
An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer includes a condensed cyclic compound represented by Formula 1. An organic light-emitting device including the organometallic compound according to the embodiments of the present disclosure may have high efficiency:
M(L
1
)(L
2
). Formula 1
Reversible Insertion of Carbenes into Ruthenium–Silicon Bonds
作者:María J. Bernal、Olga Torres、Marta Martı́n、Eduardo Sola
DOI:10.1021/ja410822p
日期:2013.12.18
The five-coordinate carbene complexes [RuκP,P,Si-Si(Me)(C6H4-2-PiPr2)2}Cl(═CHR)] (2, R = Ph; 3, R = SiMe3), analogues of the Grubbs catalyst, were prepared from the dimer [Ru(μ-Cl)κP,P,Si-Si(Me)(C6H4-2-PiPr2)2}]2 (1) and the corresponding diazoalkane N2CHR. The particular structural features that result from the presence of a strongly trans directing silyl group at the pincer ligand of these complexes