Trifluoroacetic acid → HCID 68678854, compound

Participants

Reaction Steps

Dimethylamino-acetyl chloride (0.14 g, 0.86 mmol) and (3-piperidin-4-yl-phenyl)-carbamic acid tert-butyl ester (0.20 g, 0.72 mmol) were combined in CH2Cl2 (5 mL) and triethylamine (0.21 g, 2.2 mmol) was added. After 6 h, water (5 mL) was added. The reaction mixture was extracted with CH2Cl2 (3×5 mL) and the combined organic extracts were dried (MgSO4) and concentrated. The compound was found to be unstable on silica and therefore carried on without further purification. (3-Piperidin-4-yl-phenyl)-carbamic acid tert-butyl ester (0.72 mmol) was diluted in CH2Cl2 (3 mL) and TFA (3 mL) was added. After 1 h, the reaction mixture was concentrated. Water (2 mL) was added and the solution was frozen and lyophilized overnight to provide (0.090 g) (48%) of 1-[4-(3-amino-phenyl)-piperidin-1-yl]-2-dimethylamino-ethanone.

Provenance & Evidence