Triethylamine → 6-(4-(1-benzhydrylazetidin-3-yl)piperazin-1-yl)-3-ethyl-1-phenyl-1H-pyrazolo[3,4-d]pyrimidine

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Reaction Steps

Into a 100-mL 3-necked round-bottom flask, was placed a solution of 6-chloro-3-ethyl-1-phenyl-1H-pyrazolo[3,4-d]pyrimidine (420 mg, 1.63 mmol, 1.00 equiv) in C7H8 (15 mL) at room temperature. To the resulting mixture was then added 1-(1-benzhydrylazetidin-3-yl)piperazine (500 mg, 1.63 mmol, 1.00 equiv), in portions at room temperature, followed by triethylamine (490 mg, 4.85 mmol, 3.00 equiv), in portions at room temperature. The resulting solution was heated to reflux overnight. The resulting mixture was concentrated under vacuum. The residue was dissolved in DCM (20 mL). The resulting mixture was washed with sodium chloride (2×15 mL). The resulting mixture was concentrated under vacuum. The resulting mixture was washed with methanol (1×5 mL). The solids were collected by filtration to yield 6-(4-(1-benzhydrylazetidin-3-yl)piperazin-1-yl)-3-ethyl-1-phenyl-1H-pyrazolo[3,4-d]pyrimidine as a yellow solid. MS (m/z): 530 [MH+].

Provenance & Evidence