CuI/amino acid-catalyzed coupling and cyclization of β-bromo-α,β-unsaturated amides with terminal alkynes leading to (3<i>Z</i>)-3-alkylidenepyrrol-1-ones
Microwave-assisted copper powder-catalyzed coupling and cyclization of β-bromo-α,β-unsaturated amides with amidine hydrochlorides leading to pyrimidinones