4-Methylmorpholine → HCID 15551933, compound

Participants

Reaction Steps

235 mg (1 mmol) of 2-(tetrahydropyran-4-yl)methylaminobenzoic acid is mixed in 10 ml of dimethylformamide with 266 mg (2 mmol) of 5-aminoindazole. 253 mg (2.5 mmol) of N-methylmorpholine and 456 mg (1.2 mmol) of O-(7-azabenzotriazol-1-yl)-1,1,3,3-tetamethyluronium hexafluorophosphate are added to this solution under argon and in a moisture-free environment. This mixture is stirred for 3 hours at room temperature. It is concentrated by evaporation in a vacuum, taken up in dilute sodium bicarbonate solution and extracted three times with 30 ml of ethyl acetate each. The combined organic phase is washed with water, dried, filtered and concentrated by evaporation. The residue is absorptively precipitated in ethyl acetate and suctioned off. The filtrate is concentrated by evaporation, and the residue is chromatographed on silica gel with methylene chloride:ethanol=10:1 as an eluant. 124 mg (35% of theory) of N-(indazol-5-yl)-2-(tetrahydropyran-4-yl)methylaminobenzoic acid amide with a melting point of 173.6° C. is obtained.

Provenance & Evidence