C−H Borylation of arenes has been a subject of great interest recently because of its atom‐economy and the wide applicability of borylated products in value‐added synthesis. A new bis(silylene)cobalt(II) complex bearing a bis(N‐heterocyclic silylene)‐pyridine pincer ligand (SiNSi) has been synthesized and structurally characterized. It enabled the regioselective catalytic C−H borylation of pyridines
Spatial Anion Control on Palladium for Mild C–H Arylation of Arenes
作者:Jyoti Dhankhar、Elisa González-Fernández、Chao-Chen Dong、Tufan K. Mukhopadhyay、Anthony Linden、Ilija Čorić
DOI:10.1021/jacs.0c09611
日期:2020.11.11
C-H arylation of arenes without the use of directing groups is a challenge, even for simple molecules, such as benzene. We describe spatial anion control as a concept for the design of catalytic sites for C-H bond activation, thereby enabling nondirected C-H arylation of arenes at ambient temperature. The mild conditions enable late-stage structural diversification of biologically relevant small molecules
申请人:LG CHEM, LTD. 주식회사 엘지화학(120010134563) Corp. No ▼ 110111-2207995BRN ▼107-81-98139
公开号:KR20150037711A
公开(公告)日:2015-04-08
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Carbon Dioxide Fixation and Sulfate Sequestration by a Supramolecular Trigonal Bipyramid
作者:Colm Browne、William J. Ramsay、Tanya K. Ronson、John Medley-Hallam、Jonathan R. Nitschke
DOI:10.1002/anie.201504856
日期:2015.9.14
reaction of the ligand with iron(II) tetrafluoroborate, and a M5L6 trigonal bipyramidal structure was constructed from either zinc(II) tetrafluoroborate or cadmium(II) trifluoromethanesulfonate. The spatially constrained arrangement of the three equatorial metal ions in the M5L6 structures was found to induce small‐molecule transformations. Atmospheric carbon dioxide was fixed as carbonate and bound
弯曲的二醛配体的亚组分自组装以及不同的阳离子和阴离子模板导致了两种新的金属超分子结构的形成:在配体与四氟硼酸铁(II)反应后分离出一个Fe II 4 L 6分子矩形。 M 5 L 6三角双锥体结构由四氟硼酸锌(II)或三氟甲磺酸镉(II)构成。发现M 5 L 6结构中三个赤道金属离子的空间受约束排列可诱导小分子转变。大气中的二氧化碳被固定为碳酸盐并结合到两个锌的赤道金属中心5 L 6和Cd 5 L 6组装,二氧化硫被水合并结合为Zn 5 L 6结构中的亚硫酸盐二价阴离子。亚硫酸根阴离子的随后原位氧化导致硫酸根阴离子结合在超分子袋内。