Diethyl Oxalate → HCID 13156241, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 25.7 g of methyl 2-phenyl-3-indolizinyl ketone in 360 ml of benzene were added 8.3 g of 50% sodium hydride and 28.2 g of diethyl oxalate, and the mixture was heated at 60° C. for 30 minutes. After cooling, the benzene was distilled off. To the residue was added 200 ml of water and the aqueous solution was acidified with acetic acid. Crystals precipitated were filtered off and washed with water, and then recerystallized from ethanol to give 30 g of ethyl 4-(2-phenyl-3-indolizinyl)-2,4-dioxobutyrate, melting at 100°-102° C.

Provenance & Evidence