[EN] CAPPED DUAL-HEADED ORGANOALUMINUM COMPOSITIONS<br/>[FR] COMPOSITIONS D'ORGANOALUMINIUM À DEUX TÊTES COIFFÉES
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:WO2019133699A1
公开(公告)日:2019-07-04
The present disclosure relates to a capped dual-headed organoaluminum composition having the formula (I) and processes to prepare the same. In at least one aspect, the capped dual-headed organoaluminum compositions can be used in olefin polymerization.
A new catalytic route to synthesis of silylgermylethynes
作者:Bogdan Marciniec、Hanna Ławicka、Beata Dudziec
DOI:10.1016/j.jorganchem.2007.10.039
日期:2008.1
siloxanes, silazanes, bis(silyl)benzene and bis(silyl)ethane gives monoethynylgermyl substituted vinyldisilicon products with high yields and selectivity, however, accompanied by traces of dialkynylgermyl derivatives. All catalytic results as well as those of stoichiometric study on the insertion of ethynylgermane into Ru–Si bond have permitted proposing mechanistic schemes of the reaction examined.
可以通过最近报道的称为炔烃与乙烯基硅化合物的甲硅烷基化偶联的催化方法,有效地合成已知为潜在的有机金属试剂和光电子材料前体的甲硅烷基甲基萘。[RuHCl(CO)(PR 3)n ](R = i Pr,Cy,Ph; n = 2–3)在最佳条件下有选择地产生各自的甲硅烷基锗。乙炔基锗烷与二乙烯基硅衍生物(如硅氧烷,硅氮烷,双(甲硅烷基)苯和双(甲硅烷基)乙烷)的甲硅烷基化可得到高收率和高选择性的单乙炔基锗烷基取代的乙烯基二硅产品,但伴有痕量的二炔基锗烷基衍生物。所有催化结果以及将乙炔基锗烷插入Ru-Si键的化学计量研究都提出了研究反应机理的方案。
A new protocol for synthesis of bifunctional alkynyl[vinyl or (E)-alkenyl]substituted organosilicon compounds
A new efficient route for selective synthesis of various, novel alkynyl(vinyl)substituted silicon (6) and alkynyl[(E)-alkenyl]substituted silicon compounds (9) via silylative coupling of alkynes and their products catalyzed by ruthenium(+2) complexes is described. The tandem procedure facilitates the formation of 9 synthesized in a high yield and stereoselectivity by a sequential silylative coupling
CURABLE ORGANO POLYSILOXANE COMPOSITION, ENCAPSULANT, AND ELECTRONIC DEVICE
申请人:SAMSUNG SDI CO., LTD.
公开号:US20160093825A1
公开(公告)日:2016-03-31
A curable organo polysiloxane composition, an encapsulant, and an electronic device, the composition including at least one compound represented by the following Chemical Formula 1 and having a number average molecular weight of less than about 4,000, at least one first siloxane compound including a silicon-bonded hydrogen; and at least one second siloxane compound including a silicon-bonded alkenyl group:
Reverse Regioselective Cp*Co(III)-Catalyzed [4 + 2] C–H Annulation of <i>N</i>-Chloroamides with Vinylsilanes: Synthesis of 4-Silylated Isoquinolones and Their Synthetic Utilities
作者:Arijit Ghosh、Tamanna Rana、Nilanjan Bhaduri、Amit B. Pawar
DOI:10.1021/acs.orglett.3c03115
日期:2023.11.3
have developed a Cp*Co(III)-catalyzed reverse regioselective [4 + 2] annulation of N-chlorobenzamides/acrylamides with vinylsilanes for the synthesis of 4-silylated isoquinolones. The reaction was performed at ambient temperature under redox-neutral conditions. The reaction utilized the N–Cl bond as an internal oxidant, furnished the required products with excellent regioselectivities, and demonstrated