Hydrochloric Acid → HCID 178507244, compound

Participants

Reaction Steps

200 mg of product obtained in stage 4 of example 41 are dissolved in 5 ml of methanol. 5 ml of a 2N solution of hydrochloric acid in methanol are added. Stirring is carried out for 48 hours at ambient temperature, followed by evaporation to dryness. The residue is chromatographed on a silica column, eluting with 85/15/1.5 dichloromethane/methanol/aqueous ammonia. The product obtained is taken up in 10 ml of a 50/50 methanol/dichloromethane mixture, 6 ml of 1M HCl solution in ethyl acetate are added, the mixture is left to crystallize, filtration is carried out, and 87 mg of expected product are thus recovered.

Provenance & Evidence