4-bromo-N,N-dibutyl-5-methyl-1H-pyrazole-3-carboxamide → Benzyl 4-(4-bromo-3-(dibutylcarbamoyl)-5-methyl-1H-pyrazol-1-yl)-3-(1,2,3,4-tetrahydroisoquinoline-2-carbonyl)benzoate

Participants

Reaction Steps

Following a procedure analogous to that for the synthesis of Intermediate 1E, 4-bromo-N,N-dibutyl-5-methyl-1H-pyrazole-3-carboxamide (Intermediate 163A, 268 mg, 0.85 mmol) and benzyl 4-fluoro-3-(1,2,3,4-tetrahydroisoquinoline-2-carbonyl)benzoate (Intermediate 122B, 300 mg, 0.77 mmol) were converted to the title compound (215 mg, 41%). 1H NMR (DMSO-d6, 2:1 mixture of amide rotamers) δ 8.21 (dd, J=8.3, 1.9 Hz, 1H), 8.11 (d, J=2.0 Hz, 0.5H), 8.08-8.03 (m, 0.5H), 7.85-7.78 (m, 1H), 7.55-7.33 (m, 5.5H), 7.25-7.06 (m, 3H), 7.05-6.96 (m, 0.5H), 5.47-5.32 (m, 2H), 4.82-4.42 (m, 2H), 3.92-3.71 (m, 0.5H), 3.58-3.34 (m, 3H), 3.23-2.91 (m, 2.5H), 2.82-2.74 (m, 2H), 2.27 (s, 2H), 2.22 (s, 1 H), 1.59-1.13 (m, 4H), 1.07-0.80 (m, 7H), 0.72-0.59 (m, 3H); MS(ESI+) m/z 687.5 (M+H)+.

Provenance & Evidence