Reaction of carboxylicacids with alcohols by using an equimolar amount of di-2-thienyl carbonate (2-DTC) in the presence of a catalytic amount of 4-(dimethylamino)pyridine (DMAP) followed by addition of an equimolar amount of iodine proceeded smoothly to afford the corresponding esters and 2(5H)-thiophenone in good to high yields.
An Efficient Esterification Reaction between Equimolar Amounts of Free Carboxylic Acids and Alcohols by the Combined Use of Octamethylcyclotetrasiloxane and a Catalytic Amount of Titanium(IV) Chloride Tris(trifluoromethanesulfonate)
作者:Jun Izumi、Isamu Shiina、Teruaki Mukaiyama
DOI:10.1246/cl.1995.141
日期:1995.2
Various carboxylic esters are prepared in good to high yields from equimolar amounts of free carboxylic acids and alcohols by the combined use of octamethylcyclotetrasiloxane and a catalytic amount of TiCl(OTf)3.
Simple Method for the Preparation of Esters from Grignard Reagents and Alkyl 1-Imidazolecarboxylates
作者:Thomas Werner、Anthony G. M. Barrett
DOI:10.1021/jo060562m
日期:2006.5.1
The reaction of Grignard reagents with alkyl imidazolecarboxylates, which were prepared from alcohols with carbonyl diimidazole, gave the corresponding esters in good to excellent yields. This method conveniently provides estersfrom alkyl halides and alcohols by C1-carbon chain extension.
Esterification of carboxylic acids with alcohols by using di-2-thienyl carbonate in the presence of a catalytic amount of 4-(dimethylamino)pyridine (DMAP) proceeded smoothly under mild conditions t...