Trifluoroacetic acid → N-Methyl-N-(tetrahydro-2H-pyran-4-yl)-4-piperidinamine

Participants

Reaction Steps

A mixture of 4-[methyl(tetrahydropyran-4-yl)-amino]-piperidine-1-carboxylic acid tert-butyl ester (101 mg, 0.34 mmol) and TFA (2 mL) in DCM (5 mL) was stirred at room temperature for 2 h. The reaction mixture was loaded onto an Isolute® SCX-2 cartridge which was washed with MeOH/DCM and the product eluted with 2M NH3/MeOH affording Methylpiperidin-4-yl(tetrahydropyran-4-yl)amine as a white solid (66 mg, 97%). 1H NMR (CDCl3, 300 MHz): δ 4.05-3.97 (m, 2H); 3.38 (td, J=10.9, 3.8 Hz, 2H); 3.19 (d, J=12.1 Hz, 2H); 2.84-2.57 (m, 5H); 2.27 (s, 3H); 1.80-1.49 (m, 8H).

Provenance & Evidence