Cyclopentanone → HCID 21942654, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 3-(5-fluoropyrid-2-yl)-5-(3-amino-5-cyanophenyl) -1,2,4-oxadiazole (30 mg, 0.11 mmol), cyclopentanone (24 μL, 0.26 mmol), sodium cyanoborohydride, 1.0 M solution in tetrahydrofuran, (128 AL, 0.12 mmol) in acetic acid (4 mL) was heated at 60° C. for 1 hour. After cooling, the reaction mixture was diluted with ethyl acetate and then washed with water (2X) and saturated brine, dried over anhydrous sodium sulfate, filtered, and concentrated. Silica gel chromatography using 20% ethyl acetate/hexanes afforded 15 mg (39%) of 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-cyclopentylaminophenyl)-1,2,4-oxadiazole: 1H NMR (CDCl3), δ (ppm): 8.69 (d, 1H), 8.25 (m, 1H), 7.79 (s, 1H), 7.61 (m, 2H), 6.99 (s, 1H), 4.17 (d, 1H), 3.88 (m, 1H), 2.10 (m, 1H), 1.74 (s, 2H), 1.50 (m, 1H), 1.27 (m, 2H), 0.87 (m, 2H).

Provenance & Evidence