Acetic Anhydride → 5-[8-(4-Acetyl-cis-3,5-dimethylpiperazin-1-yl)-6-morpholin-4-yl-9-(2,2,2-trifluoroethyl)-9H-purin-2-yl]pyrimidin-2-amine

Triethylamine (73.8 μl, 0.53 mmol) was added to a methylene chloride solution (9.0 ml) of 5-[8-(cis-3,5-dimethylpiperazin-1-yl)-6-morpholin-4-yl-9-(2,2,2-trifluoroethyl)-9H-purin-2-yl]pyrimidin-2-amine (108.7 mg, 0.22 mmol) at room temperature followed by the addition of acetic anhydride (25.0 μl, 0.26 mmol) with ice cooling. The resulting mixture was stirred at room temperature for 3 days followed by the addition of acetic anhydride (8.3 μl, 0.09 mmol) and the resulting mixture was stirred for 1 day. Acetic anhydride (4.2 μl, 0.04 mmol) was further added to the resulting mixture, the resulting mixture was stirred for 1 day, and the reaction mixture was poured into methylene chloride, washed with saturated aqueous sodium hydrogen carbonate solution, and dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated under reduced pressure and the resulting residue was purified by preparative thin layer silica gel chromatography (methylene chloride:methanol=10:1) to give the title compound (109.8 mg, 93%) as a pale yellow solid.

1. stirringthe resulting mixture was stirred for 1 day
2. stirringthe resulting mixture was stirred for 1 day
3. washwashed with saturated aqueous sodium hydrogen carbonate solution
4. dry with materialdried over anhydrous sodium sulfate
5. filtrationAfter filtration
6. concentrationthe filtrate was concentrated under reduced pressure
7. customthe resulting residue was purified by preparative thin layer silica gel chromatography (methylene chloride:methanol=10:1)

ORD record

ord-26805398d18a4b749ddcc4a8c58f7ad0

Source dataset

uspto-grants-2012_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08309546B2