Reactions of 5-Functionalyzed 2-(1-Haloethyl)furans with Sodium Diethylphosphite and Trialkyl Phosphites
作者:L. M. Pevzner
DOI:10.1023/b:rugc.0000042420.68061.09
日期:2004.6
5-(1-Haloethyl)furan-2-carboxylic acid derivatives react with sodium dialkyl phosphite and trialkyl phosphite in two directions to form phosphonates and alkenes. The alkene fraction in the reaction products diminishes as the electron-acceptor power of the 2-substituent in the ring increases in going from dialkylamide to ether and then to nitrile. 5-Bromoethyl-2-cyanofuran reacts with sodium diethyl phosphite to give no other products than those formed by halogenophilic attack, implying a significant withdrawal of the electron density from the bromine atom in this compound.