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Encaging the complex PdCl₂(py)₂ gave a highly efficient and reusable catalyst for the Suzuki-Miyaura cross-coupling reaction.

Tao Li and colleagues from Huazhong University of Science and Technology, China, successfully encaged the PdCl₂(py)₂ complex in the interior space of hollow silicate-1 spheres.  This new material was then applied to the Suzuki-Miyaura cross-coupling reaction of various aryl halides and arylboronic acids in aqueous media.  Even at Pd loadings of 0.0188 mol%, the catalyst gave fast conversions to the desired products under mild conditions.  Notably, due to the ‘anti-leaching’ effect of the zeolitic shell surrounding the Pd species, the catalyst showed excellent stability and reusability and could be reused 10 times without any appreciable loss of activity. 

This article is free to access until the 29th June 2012!  Click on the link below to find out more…

PdCl₂(py)₂encaged in monodispersed zeolitic hollow spheres: a highly efficient and reusable catalyst for Suzuki–Miyaura cross-coupling reaction in aqueous media, Zhenhong Guan, Jianglin Hu, Yanlong Gu, Haojun Zhang, Guangxing Li and Tao Li, Green Chem., 2012, DOI: 10.1039/C2GC35302D

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