Co-Immobilization of a Palladium-Bisphosphine Complex and Strong Organic Base on a Silica Surface for Heterogeneous Synergistic Catalysis

被引：22

作者：

Motokura, Ken ^{[1
]}

Saitoh, Koki ^{[1
]}

Noda, Hiroto ^{[1
]}

Uemura, Yohei ^{[2
]}

Chun, Wang-Jae ^{[3
]}

Miyaji, Akimitsu ^{[1
]}

Yamaguchi, Sho ^{[1
]}

Baba, Toshihide ^{[1
]}

机构：

[1] Tokyo Inst Technol, Dept Environm Chem & Engn, Midori Ku, 4259 Nagatsuta Cho, Yokohama, Kanagawa 2268502, Japan

[2] Inst Mol Sci, Dept Mat Mol Sci, Div Elect Struct, Okazaki, Aichi 4448585, Japan

[3] Int Christian Univ, Grad Sch Arts & Sci, Mitaka, Tokyo 1818585, Japan

来源：

CHEMCATCHEM | 2016年 / 8卷 / 02期

关键词：

immobilized catalysts; organic bases; Pd complexes; synergistic catalysis; XAFS; TSUJI-TROST REACTION; MESOPOROUS SILICA; COOPERATIVE CATALYSIS; CYCLIC CARBONATE; BOND-FORMATION; ACID; AMINE; NANOPARTICLES; EFFICIENT; SUZUKI;

D O I：

10.1002/cctc.201501178

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Co-immobilization of a palladium-bisphosphine complex and a strong organic base, 1,4-diazabicyclo[2.2.2] octane (DABCO), on a silica support was successfully achieved. The new catalyst structure was characterized by X-ray photoelectron spectroscopy, solid-state NMR spectroscopy, X-ray absorption fine structure spectroscopy, and elemental analysis. Although the local structure of the Pd-bisphosphine complex was unaffected by the presence of DABCO on the same silica surface, its catalytic activity in allylation reactions of nucleophiles was significantly enhanced, achieving turnover numbers (TON) up to > 10000, owing to dual-activation of substrate molecules by the Pd complex and DABCO.

引用

页码：331 / 335

页数：5

共 51 条

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