Triflimide-catalyzed allyl–allyl cross-coupling: a metal-free allylic alkylation
作者:Feiqing Ding、Ronny William、Fei Wang、Xue-Wei Liu
DOI:10.1039/c2cc33641c
日期:——
A highly efficient metal-free intermolecular C(sp3)âC(sp3) allylâallyl cross-coupling protocol between allyl acetates and allyltrimethylsilanes, which proceeded smoothly in the presence of catalytic triflimide to form 1,5-dienes with good to excellent regioselectivity, has been developed.
[η5-C9H6C(OCOCH2CH3)=C(OCOCH2CH3)CO]Fe(CO)(P(OCH3)3) were prepared by substitution of CO ligand with trimethyl phosphite and the structure of the diastereomers were characterized by NMR spectroscopy using 2D technique. Treatment of cycloheptatrienyl anion with Fe(CO)5 and acyl chloride resulted in double carbonylation to give [η5-C7H6C(OCOR)=C(OCOR)]Fe(CO)2. The mechanism of the reaction is proposed.
CH-Aktivierungsreaktionen an substituierten Zirconocenkomplexen und deren Verwendung in der katalytischen Ethylenpolymerisation
作者:Andrea I Licht、Helmut G Alt
DOI:10.1016/s0022-328x(03)00508-4
日期:2003.11
Zirconocene dichloride complexes with substituents containing aliphatic end groups at the aromatic ligands react with two equivalents of n-butyllithium to give metallacyclic zirconocene complexes via aliphatic CH-activation reactions. As well as ω-alkenyl substituted zirconocene dichloride complexes with terminal aliphatic groups as zirconocene dichloride complexes with purely aliphatic substituents
在芳族配体上具有包含脂族端基的取代基的二茂锆二茂合物与二当量的正丁基锂反应,通过脂族CH活化反应生成金属环茂锆茂配合物。具有末端脂族基团的ω-烯基取代的二氧化锆茂金属配合物以及具有纯脂族取代基的二氯化锆茂金属配合物也适用于此类金属环的合成。与甲基铝氧烷(MAO)结合使用时,这些金属环对于乙烯聚合而言是极好的催化剂。它们的活性可以是相应的二茂锆二氯化物离析物的活性的三倍半。催化剂25 / MAO能够生产2640 kg PE g -1 Zr h(60°C,戊烷溶液,10 bar乙烯压力)。
NICKEL-CONTAINING FILM-FORMING MATERIAL AND PROCESS FOR PRODUCING NICKEL-CONTAINING FILM
申请人:Hiro Toshitaka
公开号:US20100286423A1
公开(公告)日:2010-11-11
A nickel-containing film-forming material including a compound represented by a structure of the following formula (1). In the formula (1), R
1
and R
2
are each independently a hydrogen atom or a group represented by a structure of the following formula (2), a and b are each an integer of 0 to 4, and a and b satisfy the condition of 0
Reactions of (trimethylsilyl)cyclopentadiene with metal carbonyls
作者:E.W. Abel、S. Moorhouse
DOI:10.1016/s0022-328x(00)84569-6
日期:1971.4
The reactions of (trimethylsilyl)cyclopentadiene with a range of metalcarbonyls afforded π-[(trimethlsilyl)cyclopentadienyl]metalcarbonyls. The only evidence for the cleavage of the silicon-cyclopentadiene bond occurs in the reaction with manganese decacarbonyl. The compounds [(π-Me3SiC5H4)Mo(CO)3]2 (I), [(π-Me3SiC5H4)W(CO)3]2 (II), (π-Me3SiC5H4)Mn(CO)3 (III), (π-Me3SiCH5)Re(CO)3 (IV), [(π-Me3SiC5H4)Fe(CO)2]2