Reflux of two isomeric 3-amino-4,4,4-trifluoro-1-(2-pyridyl)but-2-en-1-one and 3-amino-1,1,1-trifluoro-4-(2-pyridyl)-but-3-en-2-one in acetic acid affords 4′-trifluoromethyl-2,2′:6′,2″-terpyridine (37%) with 1.4% admixture of 6′-trifluoromethyl-2,2′:4′,2″-terpyridine. Click to show full abstract
Reflux of two isomeric 3-amino-4,4,4-trifluoro-1-(2-pyridyl)but-2-en-1-one and 3-amino-1,1,1-trifluoro-4-(2-pyridyl)-but-3-en-2-one in acetic acid affords 4′-trifluoromethyl-2,2′:6′,2″-terpyridine (37%) with 1.4% admixture of 6′-trifluoromethyl-2,2′:4′,2″-terpyridine.
               
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