Pentaalkylguanidines as etherification and esterification catalysts

Article abstract of DOI:10.1016/S0040-4020(01)89753-2

Several pentaalkylguanidines have been prepared and found to be superior catalysts for the preparation of aryl and aralkyl ethers from carbonates and for the methylation of phenols with dimethylcarbonate.They also act as effective catalysts for esterification of acids with alkyl chloroformates but not for the acetylation of tertiary alcohols with acetic anhydride.