Etude des reaction promues par une base du chloro-1 p-nitrophenyl-2 ethane, du chloromethyl-9 fluorene, du (chloro-1methyl-1)ethyl-1 indene et de l'acetate de l'α,α-二甲基茚甲醇-1 dans Me 2 SO-H 2 O (28 mol%)
Pyridyl-Substituted Indenyl Ruthenium Complexes: Synthesis, Structures, and Reactivities
作者:Dafa Chen、Xi Zhang、Shansheng Xu、Haibin Song、Baiquan Wang
DOI:10.1021/om100556y
日期:2010.8.9
μ2-η5:η1-(C5H4N)(C9H5)}Ru3(CO)9 (1), and its reactivities with pyridine derivatives, PPh3, and different types of alkenes. Complex 1 was synthesized in 89% yield from Ru3(CO)12 and 3-(2-pyridyl)indene (1:1 mol ratio) in refluxing heptane. The reaction of 1 with a 5-fold excess of 3-(2-pyridyl)indene gave two complexes, η1-(C5H4N)(C9H6)}2Ru(CO)2 (2) and η5-(C5H4N)(C9H6)}η1-(C5H4N)(C9H6)}Ru2(CO)4 (3). Both were
我们已经调查的合成的新的吡啶基取代的茚基三核钌络合物,μ 2 -η 5:η 1 - (C 5 H ^ 4 N)(C 9 H ^ 5)}的Ru 3(CO)9(1),及其与吡啶衍生物PPh 3和不同类型烯烃的反应性。在回流庚烷中由Ru 3(CO)12和3-(2-吡啶基)茚(1:1摩尔比)以89%的产率合成配合物1。的反应1用5倍过量的3-(2-吡啶基)茚,得到两种复合物,η 1- (C 5 H ^ 4 N)(C 9 H ^ 6)} 2的Ru(CO)2(2)和η 5 - (C 5 H ^ 4 N)(C 9 H ^ 6)} η 1 - (C 5 H 4 N)(C 9 H 6)} Ru 2(CO)4(3)。二者也转换回1中的Ru等摩尔量的存在3(CO)12,虽然产率较低。反应1在回流的甲苯,得到意想不到的复杂,μ 3 -η 6:η 3:η 1 - (C 5 H ^ 4 N)(C 9 H ^
Experimental and DFT study on titanium-based half-sandwich metallocene catalysts and their application for production of 1-hexene from ethylene
8 bar, respectively. During this optimization and under specific reaction conditions, a switching behavior from ethylene trimerization to polymerization was also detected, as an undesired reaction. At the optimized conditions, synthesized catalysts showed the following trend toward both 1-hexene yield and selectivity: C1>C2>C3>C4. Then, to shed light on the possible reaction mechanisms and to confirm
不同类型的[Ind-C(R)-苯基]TiCl 3催化剂基于含茚基(Ind)配体的悬垂芳烃,带有各种类型的桥(R=环-C 5 H 10 (C1), (CH 3 ) 2 ( C2)、4- t Bu-环-C 5 H 9 (C3)和环-C 6 H 12(C4)) 已被合成,并用于在甲基铝氧烷 (MAO) 作为助催化剂存在下乙烯三聚生成 1-己烯。反应条件首先在 C2 催化剂情况下进行优化,其中在催化剂浓度、温度和乙烯压力为 1.5 时获得了最高的 1-己烯产物×分别为 10 -3 M、40 °C 和 8 bar。在此优化过程中和在特定反应条件下,还检测到从乙烯三聚到聚合的转换行为,这是不希望的反应。在优化条件下,合成的催化剂在 1-己烯产率和选择性方面表现出以下趋势:C1>C2>C3>C4。然后,为了阐明可能的反应机制并确认实验部分获得的活性趋势,采用了密度泛函理论 (DFT) 计算。在这条线上,
Syntheses and crystal structures of ferrocene substituted indenyl complexes
作者:Petra Escarpa Gaede
DOI:10.1016/s0022-328x(00)00522-2
日期:2000.12
From the reaction of FeCl2 with the ligand [C5H4CMe2C9H7]−, where a cyclopentadienyl and an indene unit are linked by a methylene like bridge, the new complex [η5-C5H4CMe2(C9H7)}2Fe] (1) was obtained. This compound was deprotonated and reacted with [(cod)RhCl]2 (cod: 1,5-cyclooctadiene) to give the two new heterobimetallic complexes [(η5-C5H4CMe2C9H7)Fe(η5-C5H4CMe2-η5-C9H6)Rh(cod)] (2) and [Fe(η
Stabilized borata-alkene formation: structural features, reactions and the role of the counter cation
作者:Sonja Kohrt、Steffen Dachwitz、Constantin G. Daniliuc、Gerald Kehr、Gerhard Erker
DOI:10.1039/c5dt04058b
日期:——
base under frustrated Lewis pair conditions resulted in a clean deprotonation reaction to give the borata-alkene 14. Its X-ray crystal structure analysis indicated a pronounced BC double bond character and thus a borata-benzofulvene description. The borata-alkene underwent (probably stepwise) [4 + 2] cycloaddition reactions with chalcone derivatives and a formal [6 + 2] cycloaddition with phenylmethylketene