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Polymer-supported macrocyclic Schiff base palladium complex as an efficient catalyst for the Heck reaction

✍ Scribed by Ying He; Chun Cai

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
193 KB
Volume
25
Category
Article
ISSN
0268-2605

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✦ Synopsis

Abstract

A polymer‐supported macrocyclic Schiff base palladium complex has been synthesized. In the Heck reaction of aryl iodides and bromides with ethyl acrylate or styrene, the complex has been proved to give the corresponding products in good to excellent yields. The reaction proceeded smoothly in the presence of 0.5 mol% of catalyst in DMF within 1–4 h. Recycling studies have shown that the catalyst can be readily recovered and reused for four cycles with only a slightly decrease in its activity. Copyright © 2011 John Wiley & Sons, Ltd.

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## Abstract The Heck reaction of iodobenzene and methyl acrylate took place smoothly in NMP at 140 °C in the presence of 1 mol ppb of the pincer palladium complex [4‐__tert__‐butyl‐2,6‐bis{(3__R__,7a__S__)‐2‐phenylhexahydro‐1__H__‐pyrrolo[1,2‐__c__]imidazole‐1‐on‐3‐yl}phenyl]chloropalladium to give