CO2 Fixation by Dual-Function Cu(triNHC) Catalysts as a Route to Carbonates and Carbamates via α-Alkylidene Carbonates

被引：9

作者：

Seo, Changhyeon ^{[1
]}

Kim, Seong Eon ^{[2
]}

Kim, Hyunjin ^{[1
]}

Jang, Hye-Young ^{[2
]}

机构：

[1] Ajou Univ, Dept Chem, Suwon 16499, South Korea

[2] Ajou Univ, Dept Energy Syst Res, Suwon 16499, South Korea

来源：

ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2022年 / 10卷 / 17期

基金：

新加坡国家研究基金会;

关键词：

CO2; Cu(triNHC); carbonates; carbamates; alkylidene carbonates; METHYLENE CYCLIC CARBONATES; EFFICIENT PROMOTING MEDIUM; PROPARGYLIC ALCOHOLS; IONIC-LIQUID; ORGANIC CARBONATES; AMBIENT CONDITIONS; CHEMICAL FIXATION; DIOXIDE; SYSTEM; TRANSFORMATION;

D O I：

10.1021/acssuschemeng.2c00580

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This study employed dual-functional Cu(triNHC) (triNHC = tri-N-heterocyclic carbene) catalysts for the efficient coupling of CO2 with alcohols and amines to form various carbonates and carbamates with good yields. The direct synthesis of carbonates and carbamates from CO2 was realized by the Cu(triNHC)-catalyzed carboxylative cyclization of CO2 and propargyl alcohol and subsequent reactions with an additional nucleophile (alcohols or amines). The free carbene dangled from the Cu(triNHC) catalysts deprotonated the propargyl alcohol to increase the nucleophilicity toward CO2 and the subsequent cyclization was accelerated by the coordination of the copper ion of Cu(triNHC). This dual function of Cu(triNHC) is critical to the reaction of alpha-alkylidene carbonates with nucleophiles, forming carbonates or carbamates.

引用

页码：5643 / 5650

页数：8

共 58 条

[21] Synergistic Ag(I)/nBu4NBr-catalyzed fixation of CO2 to β-oxopropyl carbonates via propargylic alcohols and monohydric alcohols [J].