Sodium hydride → HCID 70692164, compound

Participants

Reaction Steps

A solution of (S)—N,N-dibutyl-4-chloro-1-(2-(3-(hydroxymethyl)-1,2,3,4-tetrahydroisoquinoline-2-carbonyl)-4-(naphthalen-2-ylsulfonylcarbamoyl)phenyl)-5-methyl-1H-pyrazole-3-carboxamide (Example 91, 21 mg, 0.028 mmol) in DMF (900 μL) was cooled to 0° C., and NaH (2 mg, 0.061 mmol, 60% suspension in mineral oil) was added followed by 1-bromo-3-methoxypropane (9 mg, 0.061 mmol). The resulting reaction mixture was stirred warming to room temperature over 1 h and then heated at 130° C. for 3 h. Additional NaH (2 mg, 0.061 mmol, 60% suspension in mineral oil) and 1-bromo-3-methoxypropane (9 mg, 0.061 mmol) were added, and stirring was continued overnight at 130° C. Additional NaH (2 mg, 0.061 mmol, 60% suspension in mineral oil) and 1-bromo-3-methoxypropane (9 mg, 0.061 mmol) were added, and the reaction mixture was stirred at 135° C. for 24 h. TBAI (10 mg, 0.027 mmol) was then added, and stirring was continued at 140° C. for 72 h. After quenching with sat. aq. NH4Cl solution, the reaction mixture was diluted with EtOAc. The layers were separated, and the aqueous layer was extracted with EtOAc (3×). The combined organic extracts were dried over Na2SO4, filtered and concentrated in vacuo. Purification using preparative HPLC provided the title compound (4 mg, 18%) as an off-white solid after lyophilization. 1H NMR (CD3OD, mixture of amide rotamers) δ 8.82-8.69 (m, 1H), 8.29-8.20 (m, 1H), 8.16-7.92 (m, 5.5H), 7.78-7.57 (m, 3H), 7.31-7.05 (m, 3H), 6.94-6.85 (m, 0.5H), 5.24-5.36 (m, 1H), 5.09-4.91 (m, 1H), 4.53-4.47 (m, 0.5H), 4.30-4.16 (m, 1.5H), 3.64-2.73 (m, 12H), 2.62-2.49 (m, 1H), 2.38-2.24 (m, 4H), 1.83-0.86 (m, 13H), 0.80-0.70 (m, 2.5H), 0.67-0.60 (m, 0.5H); MS(ESI+) m/z 842.3 (M+H)+.

Provenance & Evidence