HCID 9973705, compound → HCID 10362645, compound

Participants

Reaction Steps

Stir at ambient temperature for 3 h a solution of 4-fluoro-3-(4-pyridinylamino)-1H-indole-2-carboxylic tert-butyl ester (Example 17, 0.15 g, 0.458 mmol) in 35% trifluoroacetic acid/dichloromethane. Concentrate the reaction under vacuum to obtain a gray solid. Dry the solid at 40° C. under vacuum and then triturate with hot ethyl acetate. Allow to cool to ambient temperature and collect a light gray powder. Dry the powder at 45° C. under vacuum for 2 h and obtain 0.15 g (88%) of the title compound: MS 272(M+H), m.p. 231–234° C. (dec.)

Provenance & Evidence