One-Pot Synthesis of 3-Triazolyl-2-iminochromenes via a Catalytic Three Component Cascade Reaction
摘要:
A variety of 3-triazolyl-2-iminochromenes were synthesized in a one-pot, catalytic, three component condensation. In this event, a Cu(I)-catalyzed cycloaddition between 2-azidoacetonitrile and an acetylene formed a triazole and activated the neighboring methylene group, Inducing an aldol-cyclization-dehydration sequence in the presence of a salicylaldehyde. Further elaboration led to more complex polyheterocycles.
One-Pot Synthesis of 3-Triazolyl-2-iminochromenes via a Catalytic Three Component Cascade Reaction
摘要:
A variety of 3-triazolyl-2-iminochromenes were synthesized in a one-pot, catalytic, three component condensation. In this event, a Cu(I)-catalyzed cycloaddition between 2-azidoacetonitrile and an acetylene formed a triazole and activated the neighboring methylene group, Inducing an aldol-cyclization-dehydration sequence in the presence of a salicylaldehyde. Further elaboration led to more complex polyheterocycles.