A Pd-bisphosphine complex and organic functionalities immobilized on the same SiO2 surface: detailed characterization and its use as an efficient catalyst for allylation

Motokura Ken; Saitoh Koki; Noda HirotoChun Wang-JaeMiyaji AkimitsuYamaguchi ShoBaba Toshihide

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A Pd-bisphosphine complex and organic functionalities immobilized on the same SiO2 surface: detailed characterization and its use as an efficient catalyst for allylation

机译：Pd-bisphosphine复杂和有机功能固定在同一二氧化矽表面:详细描述和它的使用烯丙基化的高效催化剂

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摘要

A Pd-bisphosphine complex and several organic functionalities were immobilized on the same SiO2 surface. The samples thus prepared were characterized by solid-state NMR, XPS, and XAFS. Based on the curve-fitting analysis of Pd K-edge EXAFS spectra, both the local environment of the immobilized Pd complexes and the interactions with the co-immobilized organic functions were discussed. The SiO2-supported Pd-bisphosphine complex and DABCO exhibited excellent catalytic performance for the allylation of various nucleophiles: a TON of up to 106000 was obtained. Both the catalyst activation pathway and the reaction mechanism were also discussed on the basis of the structure of the used catalyst samples.

机译：Pd-bisphosphine复杂和一些有机功能是固定在同一二氧化矽表面。以固态核磁共振、XPS和XAFS。基于Pd K-edge的曲线拟合分析当地环境的EXAFS谱固定化Pd复合物和交互co-immobilized有机功能进行了讨论。复杂和DABCO表现出优良的催化烯丙基化的各种性能亲核试剂:一吨106000。催化剂活化途径和的反应机理进行了讨论使用催化剂的结构的基础样本。

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来源
《Catalysis science & technology》 |2016年第14期|5380-5388|共9页
作者
Motokura Ken; Saitoh Koki; Noda HirotoChun Wang-JaeMiyaji AkimitsuYamaguchi ShoBaba Toshihide;
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作者单位

Tokyo Inst Technol, Dept Chem Sci & Engn, Midori Ku, 4259 Nagatsuta Cho, Yokohama, Kanagawa 2268502, Japan;

Int Christian Univ, Grad Sch Arts & Sci, Mitaka, Tokyo 1818585, Japan;

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正文语种英语
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BASES(STRUCTURES); allylation; Reaction MechanismsXAFSorganicCatalystsTon;

机译：基地(结构)、烯丙基化反应MechanismsXAFSorganicCatalystsTon;

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A Pd-bisphosphine complex and organic functionalities immobilized on the same SiO2 surface: detailed characterization and its use as an efficient catalyst for allylation

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