Synthesis and reactivity of a PC<sub>carbene</sub>P cobalt(<scp>i</scp>) complex: the missing link in the cobalt PXP pincer series (X = B, C, N)
作者:Simon Sung、Qingyang Wang、Tobias Krämer、Rowan D. Young
DOI:10.1039/c8sc02782j
日期:——
first example of a cobalt PCcarbeneP pincer complex (1) featuring a central alkylidene carbon donor accessed through the dehydration of an alcoholic POP proligand. Complex 1 shares bonding similarities with cobalt PBP and PNP pincer complexes where the donor atom engages in π-bonding with the cobalt centre, and thus completes the PXP (X = B, C, N) pincer ligand series for cobalt (for X donors that
Normal Alpha Olefin Synthesis Using Metathesis and Dehydroformylation
申请人:Chevron Phillips Chemical Company LP
公开号:US20180127329A1
公开(公告)日:2018-05-10
The present invention discloses processes for producing normal alpha olefins, such as 1-hexene, 1-octene, and 1-decene, in a multistep synthesis scheme. Generally, a first normal alpha olefin is subjected to an olefin metathesis step to form a linear internal olefin, which is then subjected to an isomerization-hydroformylation step to form a linear aldehyde, which is then subjected to a dehydroformylation step to form a second normal alpha olefin.
Access to and Reactivity of Fe
<sup>0</sup>
, Fe
<sup>−I</sup>
, Fe
<sup>I</sup>
, and Fe
<sup>II</sup>
PC
<sub>carbene</sub>
P Pincer Complexes
作者:Qingyang Wang、Richard A. Manzano、Hendrik Tinnermann、Simon Sung、Baptiste Leforestier、Tobias Krämer、Rowan D. Young
DOI:10.1002/anie.202104130
日期:2021.8.9
metal–ligand cooperative reactivity, PCcarbeneP pincer ligands are rarely reported for first-row transition-metal centres. Using a dehydration methodology, we report access to an Fe0 PCcarbeneP pincer complex (1) that proceeds via an isolated α-hydroxylalkyl hydrido complex (3). Reversible carbonyl migration to the carbene position in 1 is found to allow coordinationchemistry and E−H bond addition (E=H, B,
尽管它们具有良好的金属-配体协同反应性,但很少报道第一排过渡金属中心的PC卡宾P 钳状配体。使用脱水方法,我们报告了对 Fe 0 PC卡宾P 钳复合物 ( 1 ) 的访问,该复合物通过分离的 α-羟基烷基氢化物复合物 ( 3 ) 进行。发现羰基向1 中卡宾位置的可逆迁移允许通过铁 - 卡宾键进行配位化学和 E-H 键加成(E = H,B,Cl),代表金属 - 配体协同性的独特机制。还发现PC卡宾P 钳配体可以稳定形式化 Fe II , Fe I和 Fe -I氧化态,如复合物 [ 11-X ][BAr F 20 ] (X=Br, I)、12和 K[ 13 ] 的合成和表征所证明的。发现化合物 K[ 13 ] 具有高反应性,并从一系列脂肪族 CH 源中提取氢。DFT 的计算分析表明,正式的 Fe I和 Fe -I配合物包含显着的卡宾自由基特征。PC卡宾P 配体支架参与金属-配体协同作用并支持一
Light-emitting material, organic light-emitting device, and compound
申请人:KYULUX, INC.
公开号:US10043981B2
公开(公告)日:2018-08-07
A compound represented by the general formula (1) is useful as a light-emitting material. In the general formula (1), Ar1 to Ar3 each represent a substituted or unsubstituted aryl group, provided that at least one of Ar1 to Ar3 each represent a carbazolyl group having an N-position substituted with a group containing an electron withdrawing group.
通式(1)所代表的化合物可用作发光材料。在通式(1)中,Ar1 至 Ar3 各代表一个取代或未取代的芳基,条件是 Ar1 至 Ar3 中至少有一个各代表一个咔唑基,该咔唑基的 N 位被一个含有取电子基团的基团取代。
[EN] METHOD FOR PREPARING ORGANIC CARBOXYLIC ESTER BY MEANS OF COMBINATORIAL CATALYSIS WITH ARYL BIDENTATE PHOSPHINE LIGAND<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ESTER CARBOXYLIQUE ORGANIQUE À L'AIDE D'UNE CATALYSE COMBINATOIRE AVEC UN LIGAND ARYLIQUE BIDENTÉ DE PHOSPHINE<br/>[ZH] 芳基双齿膦配体组合催化制备有机羧酸酯的方法