N-methyl-2-pyrrolidone → HCID 24800928, compound

Participants

Reaction Conditions

Reaction Steps

Tert-butyl 4-((1-(6-bromo-4-(trifluoromethyl)pyridin-2-yl)ethoxy)methyl)-4-phenylpiperidine-1-carboxylate (100 mg, 0.18 mmol), trimethyl(trifluoromethyl)silane (70 mg, 0.46 mmol), potassium fluoride (70 mg, 1.2 mmol) and Copper(I) Iodide (100 mg, 0.525 mmol) were combined in dry dimethylformamide (1 mL) and dry N-Methyl-2-pyrrolidinone (1 mL) in a sealed tube. The mixture was heated to 110° C. for 2 hours. After cooling the reaction mixture was quenched with the addition of ammonia hydroxide (6M, 15 mL). The reaction was diluted with ether, washed with brine, dried over sodium sulfate, filtered and concentrated in vacuo. The resulting oil was redissolved in methanol (2 mL) and treated with HCl (g) for 30 seconds. The solvent was evaporated and preparatory HPLC afforded 14 mg (15%) of desired product as the TFA salt. 1H-NMR (CD3OD, 400 MHz) δ 7.92 (s, 1H), 7.24-7.57 (m, 6H), 4.54 (q, 1H), 3.91 (d, 1H), 3.57 (m, 1H), 2.82-3.03 (m, 2H), 2.51-2.77 (m, 2H), 2.34-2.48 (m, 2H), 2.03-2.22 (m, 2H), 1.38 (d, 3H). LC: Tr=1.785 min, HPLC Method 1. Mass spec.: 433.35 (MH)+.

Provenance & Evidence