Imidazole → HCID 86695131, compound

Participants

Reaction Steps

A 100-mL round-bottom flask was charged with a solution of 2-hydroxy-3-[(3R)-12-[[4-(morpholin-4-yl)cyclohexyl]oxy]-7-thia-9,11-diazatricyclo[6.4.0.0[2,6]]dodeca-1(8),2(6),9,11-tetraen-3-yl]propanenitrile (290 mg, 0.68 mmol, 1.00 equiv) in dichloromethane (10 mL). TBSCl (153 mg, 1.02 mmol, 1.51 equiv), imidazole (92 mg, 1.35 mmol, 2.00 equiv) and 4-dimethylaminopyridine (17 mg, 0.14 mmol, 0.21 equiv) were added successively at 0° C. under nitrogen. The resulting mixture was stirred overnight at room temperature. After completion, the resulting solution was diluted with water, extracted with 3×30 mL of dichloromethane, dried over sodium sulfate and concentrated under vacuum. The residue was purified by column chromatography on silica gel with ethyl acetate/petroleum ether (1:1) to afford the desired 2-[(tert-butyldimethylsilyl)oxy]-3-[(3R)-12-[[4-(morpholin-4-yl)cyclohexyl]oxy]-7-thia-9,11-diazatricyclo[6.4.0.0[2,6]]dodeca-1(8),2 (6),9,11-tetraen-3-yl]propanenitrile (350 mg, 95%) as a yellow oil. MS (ES): m/z 543 [M+H]+.

Provenance & Evidence