Synthesis of carbonates directly from 1 atm CO2 and alcohols using CH2Cl2
摘要:
We introduced here a new one-pot, general procedure for the preparation of dialkyl carbonates from alcohols in a straightforward fashion under 1 atm pressure of CO2 using Cs2CO3 and CH2Cl2 as key reagents. (C) 2010 Elsevier Ltd. All rights reserved.
An N‐heterocyclic carbene (NHC), generated by cathodic reduction of BMIm BF4, mediates the oxidative esterification of aromatic aldehydes with organic bromides in the corresponding ionic liquid as solvent. The product recovery by simple extractive work‐up with diethyl ether allowed the ionic liquid to be recycled up to 9 times for subsequent electrolyses, with no significant loss in the product yield