Improved Catalytic Activity and Stability of a Palladium Pincer Complex by Incorporation into a Metal-Organic Framework

被引：134

作者：

Burgess, Samantha A. ^{[1
]}

Kassie, Abebu ^{[1
]}

Baranowski, Sarah A. ^{[1
]}

Fritzsching, Keith J. ^{[1
]}

Schmidt-Rohr, Klaus ^{[1
]}

Brown, Craig M. ^{[2
,3
]}

Wade, Casey R. ^{[1
]}

机构：

[1] Brandeis Univ, Dept Chem, 415 South St MS 015, Waltham, MA 02453 USA

[2] Natl Inst Stand & Technol, Ctr Neutron Res, Gaithersburg, MD 20899 USA

[3] Univ Delaware, Chem & Biomol Engn, Newark, DC 19716 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2016年 / 138卷 / 06期

关键词：

ASYMMETRIC CATALYSIS; HETEROGENEOUS CATALYSIS; TRANSFER HYDROGENATION; HIGHLY EFFICIENT; BOND ACTIVATION; PHOSPHINE; LIGAND; OXIDATION; CO2; TRANSFORMATIONS;

D O I：

10.1021/jacs.5b12366

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A porous metal-organic framework Zr6O4(OH)(4)(L-PdX)(3) (1-X) has been constructed from Pd diphosphinite pincer complexes ([L-PdX](4-) = [(2,6-(OPAr2)(2)C6H3)PdX](4-), Ar = p-C6H4CO2-, X = Cl, I). Reaction of 1-X with PhI(O2CCF3)(2) facilitates I-/CF3CO2- ligand exchange to generate 1-TFA and I-2 as a soluble byproduct. 1-TFA is an active and recyclable catalyst for transfer hydrogenation of benzaldehydes using formic acid as a hydrogen source. In contrast, the homogeneous analogue Bu-t(L-PdTFA) is an ineffective catalyst owing to decomposition under the catalytic conditions, highlighting the beneficial effects of immobilization.

引用

页码：1780 / 1783

页数：4

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