Answers are grounded in this paper and cite their sources.
Iminium ions generated in situ via copper(I) bromide catalyzed oxidation of N-aryl amines readily undergo [4 + 2] cycloadditions with a range of dienophiles. This method involves the functionalization of both a C(sp(3))-H and a C(sp(2))-H bond and enables the rapid construction of polycyclic amines under relatively mild conditions.
No takes yet. Share an insight, caveat, or question.
Min et al. (2014) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: