One-pot, Three-component Synthesis of Dialkyl 4-(alkylamino)-7-alkoxy-5-oxo-1-pyridine-2-yl-1,5- dihydrofuro[3,4-b]pyridine-2,3-dicarboxylate

摘要

A one-pot isocyanide-based three-component reaction of 2-aminopyridine and acetylenic esters with alkyl isocyanides afforded tetraalkyl 4-(alkylammo)-2/M,2'-bipyridine-2,3,5,6-tetracarboxylate and dialkyl 4-(alkylamino)-7-alkoxy-5-oxo-1-pyridin-2-yl-1,5-dihydrofuro[3,4-b]pyridine 2,3-dicarboxylate in good to high yields under mild reaction conditions.