Dimethylformamide → HCID 67376243, compound

Participants

Reaction Conditions

Reaction Steps

(Z)—N-hydroxy-1H-indazole-5-carboximidamide (0.055 g, 0.312 mmol), N1-((ethylimino)methylene)-N3,N3-dimethylpropane-1,3-diamine hydrochloride (0.120 g, 0.624 mmol) and 2-(2-oxo-3,3-diphenylpiperidin-1-yl)acetic acid (0.097 g, 0.312 mmol; Example 68E) were stirred together in dichloroethane (1 mL) at room temperature for 20 minutes. N,N-Dimethylformamide (0.2 mL) was added and stirring was continued for 2 hours and a dark solution resulted. The reaction was heated to 85° C. and stirred overnight. The reaction was cooled, concentrated, loaded onto a GraceResolv™ 4 g silica gel column (Grace Davison Discovery Sciences) and the product eluted with a gradient of 5% ethyl acetate/hexanes to 75% ethyl acetate/hexanes (Flow=18 mL/minute) over 30 minutes. The material obtained was subjected to a second chromatography on a GraceResolv™ 4 g silica gel column (Grace Davison Discovery Sciences) and the product eluted with a gradient of 0.5% methanol/dichloromethane to 7.5% methanol/dichloromethane (Flow=18 mL/minute) over 30 minutes to give the title compound. 1H NMR (300 MHz, DMSO-d6) δ 8.52 (s, 1H), 8.30 (s, 1H), 8.01 (dd, J=1.2, 8.8, 1H), 7.75 (d, J=8.7, 1H), 7.45-7.07 (m, 10H), 4.92 (s, 2H), 3.66 (t, J=6.3, 2H), 2.76-2.57 (m, 2H), 1.78 (s, 2H).

Provenance & Evidence