Trifluoroacetic acid → HCID 22258789, compound

Participants

Reaction Steps

To a solution of tert-butyl 3-(2-{[(1E)-aminomethylidene]amino}-3-cyano-6-{2-(cyclopropylmethoxy)-6-[(4-methoxybenzyl)oxy]phenyl}-4-pyridinyl)-1-piperidinecarboxylate (0.180 g, 0.289 mmol) in MeOH (5 mL) and toluene (5 mL) was added trifluoroacetic acid (0.01 mL). The mixture was allowed to stand for 20 days and concentrated under reduced pressure. Purification by column chromatography on silica gel (CH2Cl2/MeOH 50:1 to 20:1) gave tert-butyl 3-(4-amino-7-{2-(cyclopropylmethoxy)-6-[(4-methoxybenzyl)oxy]-phenyl}pyrido[2,3-d]pyrimidin-5-yl)-1-piperidinecarboxylate as a colorless oil (0.026 g, yield; 15%).

Provenance & Evidence