Facile Synthesis of 4-H-Pyran Derivatives Bearing Indole Skeleton via [3+3] Cyclization of 3-Indolyl-3-oxopropanenitriles with Dialkyl Acetylenedicarboxylates and Isocyanides
Facile Synthesis of 4-H-Pyran Derivatives Bearing Indole Skeleton via [3+3] Cyclization of 3-Indolyl-3-oxopropanenitriles with Dialkyl Acetylenedicarboxylates and Isocyanides