Methods for the preparation of 2-nitrobenzofurans

Dmitry V. Osipov,Darya A. Rashchepkina,Pavel E. Krasnikov,Vitaly A. Osyanin

Chemistry of Heterocyclic Compounds（2023）

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摘要

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.

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关键词

bromonitromethane,chloronitrostyrenes,2-nitrobenzofurans,2-(2-nitroethyl)phenols,o-quinone methides,salicylic aldehydes,dearomatization,nitration,ipso substitution

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