Abstract
The rise of carbon dioxide (CO2) in atmosphere is considered as a major cause of global warming. Therefore, CO2 utilization has attracted increasing attention. Among those, using CO2 as C1-feedstock for “value carbon” in advanced chemicals provides a solution. Here, we show an acetylglucose-based imidazolium salt for Cu-catalyzed cyclization of propargylic amines and CO2 with an excellent turnover frequency value of 400 h−1. To the best of our knowledge, it is the first example of acetylglucose-based imidazolium salts for a noble-metal-free Cu catalytic system for the cyclization of propargylic amines and CO2.
Graphical Abstract
Low-cost and high-efficiency acetylglucosyl-based imidazolium Cu catalytic system for CO2 conversion has been developed, which can boost a record turnover frequency of 400 h−1 in Cu-catalyzed carboxycyclization of terminal propargylic amines and CO2.
Disclosure statement
The authors declare no conflict of interest.
Data availability statement
The data that support the findings of this study are available in the Supporting Information of this article.