Two of this molecule are joined to boron tri- luoride in the dye BODIPY (bo-"die-pie").
Reaction of a münchnone (MYOONK-nohn) with an alkyne followed by a retro-Diels-Alder loss of carbon dioxide can be used to produce these molecules. Two of this molecule are joined to boron tri- luoride in the dye BODIPY (bo-"die-pie"). The Michael addition of tosyl isoÂ·cyanide to an enone followed by an elimination forms these molecules in the Van Leusen reaction. A primary amine reacts with a 1,4-diketone ("one four die key tone") to form them in the Paal-Knorr synthesis. Four of these structures are combined to form a porphyrin (POR-fur-in) ring. They can be formed by treating of furan with ammonia to replace the oxygen atom with nitrogen. For 10 points, name these  ve-membered heteroÂ·cyclic aromatic compounds containing a single nitrogen atom.
Reaction of a münchnone (MYOONK-nohn) with an alkyne followed by a retro-Diels-Alder loss of carbon dioxide can be used to produce these molecules.
pyrroles (PEER-ole(s))