Metal-Free Synthesis of Cyclic and Acyclic Carbonates from CO<sub>2</sub>and Alcohols
作者:Yu Na Lim、Chan Lee、Hye-Young Jang
DOI:10.1002/ejoc.201400031
日期:2014.3
Diverse cyclic and acyclic carbonates such as ethylene carbonate, propylene carbonate, glycerol carbonate, and dimethyl carbonate were synthesized in moderate to good yields by the direct coupling of the corresponding alcohols with carbon dioxide in the absence of metal catalysts and inorganic bases. The direct carbonation mechanism of alcohols in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene
在没有金属催化剂和无机碱的情况下,通过相应的醇与二氧化碳的直接偶联,合成了多种环状和无环碳酸酯,如碳酸亚乙酯、碳酸亚丙酯、甘油碳酸酯和碳酸二甲酯,产率中等至良好。通过 18O 标记实验和手性醇实验探讨了醇在 1,8-二氮杂双环[5.4.0]十一碳-7-烯、1-丁基-3-甲基咪唑鎓六氟磷酸盐和二溴甲烷存在下的直接碳酸化机制。