Dimethylcarbamoyl Chloride → Trifluoroacetic acid

Participants

Reaction Steps

A solution of N-(2,2-difluoroethyl)-2-(4-(2,4-difluorophenoxyl)piperidin-1-yl)-5,6,7,8-tetrahydropyrido[3,4-b]pyrazin-3-amine TFA salt (15 mg, 0.028 mmol), dimethylcarbamic chloride (3.0 mg, 0.028 mmol), and DIPEA (4.9 μL, 0.028 mmol) in DCM (278 μL) was stirred at room temperature overnight. The crude reaction mixture was diluted in DMF, filtered through a hydrophilic PTFE 0.45 μm filter (Millipore® Millex-LCR), and purified via HPLC Method to give the title compound as a TFA salt (5 mg) as a clear oil. 1H NMR (400 MHz, methanol-d4) δ ppm 1.92-2.02 (m, 2H), 2.09-2.18 (m, 2H), 2.82 (t, J=5.8 Hz, 2H), 2.90 (s, 6H), 2.99 (ddd, J=12.4, 8.6, 3.4 Hz, 2H), 3.34-3.41 (m, 2H), 3.55 (t, J=5.8 Hz, 2H), 3.77 (td, J=14.5, 4.3 Hz, 2H), 4.28 (s, 2H), 4.42-4.49 (m, 1H), 5.89-6.21 (m, 1H), 6.84-6.91 (m, 1H), 6.98 (ddd, J=11.4, 8.6, 3.0 Hz, 1H), 7.17 (td, J=9.2, 5.3 Hz, 1H); ESI-MS m/z [M+H]+ 497.4.

Provenance & Evidence