Hydrochloric Acid → Trifluoroacetic acid

Participants

Reaction Steps

Using an adaptation of the method described in Procedure 6, substituting 4-(3-chloro-6-methoxy-phenoxazin-10-yl)-piperidine-1-carboxylic acid tert-butyl ester, 1p, for 4-[3-(1H-tetrazol-5-yl)-phenoxazin-10-yl]-piperidine-1-carboxylic acid tert-butyl ester, 5a, and a mixture of TFA in methylene chloride for a 4N hydrochloric acid solution, the title compound 3-chloro-6-methoxy-10-piperidin-4-yl-10H-phenoxazine, 7p was obtained as a TFA salt after purification via reverse phase HPLC (eluent gradient: CH3CN in water containing 0.1% TFA).

Provenance & Evidence