نتایج جستجو برای: co oligomerization of olefins

تعداد نتایج: 21196680  

Journal: :Chemical communications 2013
Liena Qin Hajime Hirao Jianrong Steve Zhou

A regioselective Heck reaction of aliphatic olefins and aryl bromides is realized at internal carbons of olefins. Methanol solvent promoted halide ionization from neutral arylpalladium halide complexes via hydrogen bonding, so as to create cationic aryl-Pd species for regioselective olefin insertion.

Journal: :Chemical communications 2011
Christine A Caputo Zhongliang Zhu Zachary D Brown James C Fettinger Philip P Power

The reactions of Ar'GaGaAr' (Ar' = C(6)H(3)-2,6-(C(6)H(3)-2,6-(i)Pr(2))(2)) with alkenes revealed the addition of two olefins per Ar'GaGaAr' under ambient conditions for ethylene, propene, 1-hexene and styrene but no reactions with more hindered or cyclic olefins.

Journal: :Chemical communications 2007
Kasi Nehru Soo Jeong Kim In Young Kim Mi Sook Seo Youngmee Kim Sung-Jin Kim Jinheung Kim Wonwoo Nam

A non-heme manganese(II) complex shows a high catalytic activity in the epoxidation of olefins by iodosyl benzene and in the oxidation of olefins, alcohols and alkanes by peracetic acid; a mechanism involving metal-based oxidants is proposed for the oxidation reactions.

2017
Fabian Dielmann Alexey Timoshkin Martin Piesch Gábor Balázs Manfred Scheer

A synthetic approach to the sandwich complex [Cp'''Co(η4 -P4 )] (2) containing a cyclo-P4 ligand as an end-deck was developed. Complex 2 is the missing homologue in the series of first-row cyclo-Pn sandwich complexes, and shows a unique tendency to dimerize in solution to form two isomeric P8 complexes [(Cp'''Co)2 (μ,η4 :η2 :η1 -P8 )] (3 and 4). Reactivity studies indicate that 2 and 3 react wi...

Journal: :Catalysis Today 2021

The production of base chemicals such as olefins and aromatics from synthesis gas is great interest both an academic industrial point view. We prepared a bulk iron Fischer Tropsch catalyst promoted with potassium capable converting to combined it H-ZSM-5 zeolite convert the formed on acid sites. All experiments were performed in stacked bed mode avoid migration promoters zeolite, which can deac...

Journal: :Chemical communications 2013
Macharla Arun Kumar Peraka Swamy Mameda Naresh Marri Mahender Reddy Chozhiyath Nappunni Rohitha Sripadi Prabhakar Akella Venkata Subrahmanya Sarma Joseph Richard Prem Kumar Nama Narender

A new metal-free protocol is described for the synthesis of terminal acetals by tandem oxidative rearrangement of olefins using oxone as an oxidant in the presence of iodine. Moreover, a one-pot procedure for the preparation of glycol mono esters from olefins is also presented for the first time using the same reagent system.

Journal: :Chemical communications 2014
Yongsheng Yang Jiayi Guo Huimin Ng Zhiyong Chen Peili Teo

The hydration of terminal olefins to secondary alcohols has been achieved using a Pd(II)/Ru(II) catalyst combination with high regioselectivity and yields. Both vinyl arenes and aliphatic olefins can be hydrated easily with the tandem catalyst system using a low catalyst loading of 1 mol%.

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