Catalyst-free esterification of alcohols using 2-acyl-4,5-dichloropyridazinones under microwave conditions
作者:Bo Ram Kim、Gi Hyeon Sung、Sang-Gyeong Lee、Yong Jin Yoon
DOI:10.1016/j.tet.2013.02.046
日期:2013.4
Efficient and green esterification is of great importance. In this work, we demonstrate the catalyst-free esterification of alcohols by their reaction with 2-acy1-4,5-dichloropyridazin-3(2H)-ones under microwave irradiation. Aliphatic and aromatic alcohols were converted into the corresponding esters in good to excellent yields under microwave irradiation in solvent or solvent-free conditions. It is noteworthy that the reaction is catalyst-free, atom-economic, and rapid and that the process is inexpensive. (C) 2013 Elsevier Ltd. All rights reserved.
Facile Esterification of Alcohols with 2-Acyl-4,5-dichloropyridazin-3(2H)-ones under Friedel–Crafts Conditions
作者:Hyo Yoon、Yong-Jin Yoon、Bo Kim、Gi Sung、Ki Ryu、Sang-Gyeong Lee
DOI:10.1055/s-0034-1378335
日期:——
This paper describes the esterification of aromatic and aliphatic alcohols by using 2-acyl-4,5-dichloropyridazin-3(2H)-ones as an acyl source under Friedel Crafts conditions. Twelve alcohols were reacted with four 2-acyl-4,5-dichloropyridazin-3(2H)-ones in the presence of AlCl3 in tetrahydrofuran at room temperature to give the corresponding esters in moderate to excellent yields. Thus, 2-acylpyridazin-3(2H)-ones serve as good and atom-economic acyl sources for the esterification of aromatic alcohols under Friedel Crafts conditions, representing a rapid, practical, and efficient method of esterification.
Rapid and Ecofriendly Esterification of Alcohols with 2-Acylpyridazinones
Atom-economical esterification is of great importance in green chemistry. In this work, we demonstrated the catalyst and additive free esterification of alcohols by their reaction with 2-acyl-4,5-dichloropyridazin-3(2H)-ones without solvent at $100^\circ}C$. Aliphatic and aromatic alcohols were converted into the corresponding esters in good to excellent yields. It is noteworthy that the reaction is solvent-free, atom-economic, easy-workup, and rapid and that the process is inexpensive.