Congratulations to Jian Chen whose paper on The cooperation of porphyrin-based porous polymer and thermal-responsive ionic liquid for efficient CO2 cycloaddition reaction has been published in Green Chemistry.(DOI: 10.1039/c7gc03801a)
The cooperation of catalyst and co-catalyst, together with the efficient recycle is of most important and still a big challenge for CO2 cycloaddition reaction. Herein, we report a facile, atom-efficient and green method to synthesize a porous Zinc-porphyrin-based framework (P-POF-Zn) as a catalyst for the synthesis of cyclic carbonate. We first demonstrated the combination of P-POF-Zn and thermal-responsive co-catalyst ionic liquid [CPeDMAPy]Br could be used for the efficient CO2 cycloaddition reaction at 100 °C to afford high activity with turnover frequency (TOF) value of 433 h-1. This high activity is possibly due to the good cooperation of P-POF-Zn and [CPeDMAPy]Br owing to the formation of hydrogen bond between the -OH group of P-POF-Zn with the carboxyl group of [CPeDMAPy]Br. The catalyst proved to have a good substrate universality and could be fully recyclable and robust. The combination of P-POF-Zn and [CPeDMAPy]Br provides an easy and environmentally friendly way to convert CO2.