Diisopropylethylamine → HCID 71467508, compound

Stir a mixture of 3-[5-(3,5-Dichloro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-4,5,6,7-tetrahydro-benzo[c]thiophene-1-carboxylic acid (850 mg, 1.84 mmol), HATU (837 mg, 2.20 mmol) and DIEA (539 mg, 0.8 mL, 4.6 mmol) in DCM (8 mL) at room temperature for 15 min, followed by addition of (R)-3-aminopyrrolidin-2-one hydrochloride (315 mg, 2.76 mmol). Stir the reaction mixture at room temperature for additional 1.5 hour. Dilute the reaction mixture with water (20 mL) and extract with DCM (20 mL×3). The combined organic layers are washed brine, dried over anhydrous Na2SO4 and concentrated under vacuum. Purify the residue by preparative HPLC to afford 3-(5-(3,5-dichlorophenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazol-3-yl)-N—((R)-2-oxopyrrolidin-3-yl)-4,5,6,7-tetrahydrobenzo[c]thiophene-1-carboxamide as a white solid (730 mg, 73.0%). MS (m/z): 546 (M+1); 1H NMR (400 MHz, CDCl3) δ 7.52-7.46 (m, 3H), 6.49 (s, 1H), 5.83 (s, 1H), 4.51-4.48 (m, 1H), 4.22 (d, J=17.2, 1H), 3.85 (d, J=17.2, 1H), 3.52-3.47 (m, 2H), 3.09-2.87 (m, 5H), 2.12-2.03 (m, 1H), 1.89-1.73 (m, 4H).

1. stirringStir the reaction mixture at room temperature for additional 1.5 hour
2. extractionextract with DCM (20 mL×3)
3. washThe combined organic layers are washed brine
4. dry with materialdried over anhydrous Na2SO4
5. concentrationconcentrated under vacuum
6. customPurify the residue by preparative HPLC

ORD record

ord-2a44d4b821184634a983c3d0aab40f22

Source dataset

uspto-grants-2016_02

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09255111B2