Pyridinium chloride → HCID 20197874, compound

Participants

Reaction Steps

A mixture of 16.0 g of 6,7-dichloro-5-methoxy-2-(2'-fluorophenyl)benzo[b]thiophene and 150 g of pyridine hydrochloride is heated at 200°-250° for 1 hour with stirring under an atmosphere of nitrogen. The mixture is allowed to cool, diluted with water and the precipitate is collected. The precipitate is dissolved in dichloromethane and the solution is washed with water, dried and filtered. Evaporation of the solvent followed by treatment of the mixture with ether-hexane gives 13.2 g of 6,7-dichloro-2-(2'-fluorophenyl)-5-hydroxybenzo[b]thiophene as an amorphous solid.

Provenance & Evidence