Acid-catalyzed cycloadditions utilizing nitrogen-containing building blocks are powerful tools for the synthesis of azaheterocyclic molecules.This review summarizes Tf2NH-catalyzed cycloadditions of imines and other related building blocks with electron-rich alkenes, alkynes, and 1,3-dienes, giving a various type of azaheterocycles and related nitrogen-containing compounds.
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Takasu et al. (2018) studied this question.
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