

METHODS FOR THE PREPARATION OF 2-NITROBENZOFURANS

Abstract
The review summarizes the existing methods for the synthesis of 2-nitrobenzofurans and their polycondensed derivatives, which present valuable substrates for effecting dearomatization of the furan ring. Electrophilic nitration of 2-unsubstituted benzofurans, ipso substitution, condensation of salicylic aldehydes with bromonitromethane, and oxidation of 2-(2-nitroethyl)phenols have received the most attention.
Keywords
bromonitromethane; chloronitrostyrenes; 2-nitrobenzofurans; 2-(2-nitroethyl)phenols; o-quinone methides; salicylic aldehydes; dearomatization; nitration; ipso substitution.
Latvian Institute of Organic Synthesis - Aizkraukles iela, 21, Riga, LV-1006, Latvia - hgs@osi.lv