反应详情

Tetrahydrofuran (1.2 mL) was added to a vial containing 4-((3,5-dimethyl-4-(4-(trifluoromethyl)-1H-pyrazol-1-yl)phenoxy)(3,3-dimethylcyclobutyl)methyl)benzoic acid (115 mg, 0.240 mmol), ethyl 3-aminopropanoate hydrochloride (74.7 mg, 0.490 mmol) and O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (185 mg, 0.490 mmol). Diisopropylethylamine (0.210 mL, 1.22 mmol) was then added. The reaction was stirred for 1 h, and was then concentrated. Purification by column chromatography (0-50% ethyl acetate in heptane) afforded ethyl 3-(4-((3,5-dimethyl-4-(4-(trifluoromethyl)-1H-pyrazol-1-yl)phenoxy)(3,3-dimethylcyclobutyl)methyl)benzamido)propanoate (110 mg, 39% yield) as an oil. 1H NMR (400 MHz, CDCl3) δ 7.87 (s, 1H), 7.71 (d, J=8.6 Hz, 2H), 7.64 (s, 1H), 7.36 (d, J=8.2 Hz, 2H), 6.81 (t, J=4.8 Hz, 1H), 6.57 (s, 2H), 5.00 (d, J=6.8 Hz, 1H), 4.17 (q, J=7.2 Hz, 2H), 3.71 (q, J=6.1 Hz, 2H), 2.57-2.74 (m, 3H), 1.87-1.92 (m, 7H), 1.80-1.87 (m, 1H), 1.72-1.80 (m, 1H), 1.59-1.68 (m, 1H), 1.21-1.35 (m, 3H), 1.13 (s, 3H), 1.10 (s, 3H). MS (M+1): 572.3.

1. concentrationwas then concentrated
2. customPurification by column chromatography (0-50% ethyl acetate in heptane)