methyl 4-chloro-1H-indole-2-carboxylate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Methyl 2-azido-3-(2-chlorophenyl)-propenoate (3.566 g, 144 mmol) was suspended in toluene (800 ml) and the mixture was heated at reflux for three hours, then cooled and allowed to stir at room temperature overnight. A yellow crystalline material was obtained by filtration and recrystallised from hexane. the mixture was heated at reflux for three hours cooled A yellow crystalline material was obtained by filtration recrystallised from hexane