Journal of Heterocyclic Chemistry p. 729 - 732 (1997)
Update date:2022-07-30
Topics:
Coppo, Frank T.
Fawzi, Maged M.
The triethylamine-catalyzed reaction of 4-substituted ethyl 2-acyl-3-amino-6-methylthieno[2,3-b]pyridine-4-carboxylates IIIa-h with 2,2,6-trimethyl-4H-1,3-dioxin-4-one IV gave 4-substituted ethyl 3-acetyl-2-hydroxy-7-methylthieno[2,3-b:4,5-b']dipyridine-9
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