A mild and efficient 1,4-diazabicyclo[2.2.2]octane (DABCO)-catalyzed three-component
domino reaction was developed for the synthesis of highly functionalized NH-pyrroles
from arylglyoxal monohydrates, enamino esters, and cyclic 1,3-dicarbonyl compounds
in 1,4-dioxane at room temperature for 0.5 hours. Various substituted NH-pyrroles
were obtained in moderate to good yields.
Key words
multicomponent reaction - pyrroles - DABCO - cyclization - arylglyoxal monohydrates
- enamino esters