Catalysis of a Bis-Caffeine Palladium(II) NHC-Pincer Complex

GND
1283594439
Affiliation
Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldt Str. 10, 07743 Jena, Germany;(O.B.);(A.W.)
Bysewski, Oliver;
GND
1016244169
ORCID
0000-0003-0757-8721
Affiliation
Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldt Str. 10, 07743 Jena, Germany;(O.B.);(A.W.)
Winter, Andreas;
GND
113792077
Affiliation
Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldt Str. 10, 07743 Jena, Germany;(O.B.);(A.W.)
Schubert, Ulrich S.

A tridentate bis -NHC Pd complex, based on caffeine, was studied for its catalytic activity. This complex displayed a high catalytic activity in the Suzuki–Miyaura and Mizoroki–Heck cross-coupling reactions of aryl halides. The Sonogashira cross-coupling was also investigated but reveals a fast plateauing of the reaction. Aryl iodides as well as aryl bromides react when equipped with either electron-donating or electron-withdrawing substituents. Aryl chlorides, which contained electron-withdrawing groups, were also reactive under the applied conditions.

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