کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1324425 | 977339 | 2011 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis, structural elucidation and catalytic activity toward a model Mizoroki–Heck C–C coupling reaction of the pyrazolic Tröger’s base Pd4Cl8(PzTB)2 complex Synthesis, structural elucidation and catalytic activity toward a model Mizoroki–Heck C–C coupling reaction of the pyrazolic Tröger’s base Pd4Cl8(PzTB)2 complex](/preview/png/1324425.png)
The synthesis of a novel palladium (II) complex Pd4Cl8(PzTB)2, where PzTB is a pyrazole Tröger’s base analogue ligand is reported. A complete structure elucidation of the complex was achieved by spectroscopic and crystallographic data, exhibiting a metallomacrocycle supramolecular structure and a planar-square geometry on each palladium atom. This complex exhibited also a high activity and selectivity toward a model Mizoroki–Heck C–C coupling reaction of styrene with some iodobenzene derivatives.
The synthesis of a new metallomacrocycle from the reaction of a pyrazolic Tröger’s base (PzTB) analogue and PdCl2(CH3CN)2 in MeOH at ambient temperature is reported. The structure of this product was unambiguously confirmed by X-ray diffraction and several experiments showed the high catalytic activity of this complex toward the Mizoroki–Heck C–C coupling reaction of styrene with iodobenzene derivatives.Figure optionsDownload as PowerPoint slideHighlights
► The synthesis of a new metallomacrocycle from the reaction of a pyrazolic Tröger’s base (PzTB) analogue with PdCl2(CH3CN)2 was achieved.
► The structure of this product, Pd4Cl8(PzTB)2, was unambiguously confirmed by X-ray diffraction.
► Several experiments showed the high catalytic activity of this complex toward the Mizoroki–Heck C–C coupling reaction of styrene with iodobenzene derivatives.
► The Hg drop test indicated that this complex behaved as a homogeneous catalyst in the course of the Mizoroki–Heck reactions.
► The increasing of the temperature from 90 °C, 120 °C–160 °C improved the reactivity of this complex showing TOF’s of 12.1, 45.0 and 490.0 respectively.
Journal: Journal of Organometallic Chemistry - Volume 696, Issue 9, 1 May 2011, Pages 1834–1839