Cyanoacetic acid → HCID 71264074, compound

Participants

Reaction Steps

rac-1-[(3R,4R)-4-Methylpiperidin-3-yl]-1,2,4,7-tetrahydropyrrolo[3′,2′:5,6]pyrido[4,3-d][1,3]oxazine (21.2 mg, 0.0777 mmol) in N,N-dimethylformamide was stirred with cyanoacetic acid (15 mg, 0.18 mmol), O-(7-azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate (67 mg, 0.18 mmol), N,N-diisopropylethylamine (44.9 μL, 0.264 mmol) at room temperature for one day. After addition of water, the reaction mixture was extracted with ethyl acetate, and the organic layer was dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (Hi Flash column amino type manufactured by Yamazen Corporation: chloroform/methanol=20/1 (v/v)) to give the title compound as a yellow oil (3 mg, yield 10%).

Provenance & Evidence