Triethylamine → HCID 57882762, compound

Participants

Reaction Conditions

Reaction Steps

Ethyl 4-[(1S)-1-(3-(3,5-dichlorophenyl)-5-{[(trifluoromethyl)sulfonyl]oxy}-1H-pyrazol-1-yl)ethyl]benzoate (2.15 g, 4.0 mmol), 6-methoxy-2-naphthylboronic acid (1.18 g, 6.0 mmol) and triethylamine (1.2 ml, 8.0 mmol) were dissolved in dimethoxyethane (40 ml) in a thick-wall tube. The reaction mixture was purged with N2 for 15 min. Catalyst Pd(PPh3)4 (350 mg, 8%) was added, and the test tube was heated in a microwave reactor to 100° C. for 15 min. The solvent was removed under reduced pressure, and the residue partitioned between ethyl acetate and IN HCl. The organic layer was washed with 0.5 NH4Cl 2×, brine 2×, dried over Na2SO4, and filtered through a Celite pad. The crude product was purified by column chromatography (SiO2, 10-15% ethyl acetate in hexanes) to give ethyl 4-{(1S)-1-[3-(3,5-dichlorophenyl)-5-(6-methoxy-2-naphthyl)-1H-pyrazol-1-yl]ethyl}benzoate as a dry film. NMR (500 MHz, CDCl3) δ: 1.38 (t, J=7.1 Hz, 3H); 1.96 (d, J=7.0 Hz, 3H); 3.95 (s, 3H; 4.37 (q, J=7.1 Hz, 2H); 5.59 (q, J=7.0 Hz, 1H); 6.65 (s, 1H); 7.17 (d, J=2.6 Hz, 1H); 7.20 (dd, J=2.6, 8.9 Hz, 1H); 7.28 (d, J=8.4 Hz, 2H); 7.29 (dd, J=1.8, 8.5 Hz, 1H); 7.30 (t, J=1.9 Hz, 1H); 7.63 (d, J=1.8 Hz, 1H); 7.67 (d, J=8.9 Hz, 1H); 7.76 (d, J=8.5 Hz, 1H); 7.80 (d, J=1.9 Hz, 2H); 7.99 (d, J=8.4 Hz, 2H); MS C31H26Cl2N2O3 Cald: 544.13; Obsd: 545.15.

Provenance & Evidence