Acetic Acid → 6-((3S,4S)-4-Methyl-1-((2-methylpyrimidin-5-YL)methyl)pyrrolidin-3-YL)-1-(tetrahydro-2H-pyran-4-YL)-1,5-dihydro-4H-pyrazolo[3,4-D]pyrimidin-4-one

HRID 2424794Notes

Reaction equation

Cl.[CH3:2][C@@H:3]1[CH2:7][NH:6][CH2:5][C@H:4]1[C:8]1[NH:9][C:10](=[O:23])[C:11]2[CH:16]=[N:15][N:14]([CH:17]3[CH2:22][CH2:21][O:20][CH2:19][CH2:18]3)[C:12]=2[N:13]=1.C(O)(=O)C.[CH3:28][C:29]1[N:34]=[CH:33][C:32]([CH:35]=O)=[CH:31][N:30]=1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>ClCCCl>[CH3:2][C@@H:3]1[CH2:7][N:6]([CH2:35][C:32]2[CH:31]=[N:30][C:29]([CH3:28])=[N:34][CH:33]=2)[CH2:5][C@H:4]1[C:8]1[NH:9][C:10](=[O:23])[C:11]2[CH:16]=[N:15][N:14]([CH:17]3[CH2:22][CH2:21][O:20][CH2:19][CH2:18]3)[C:12]=2[N:13]=1

Participants

Conditions

Temperature: 50 °C

Procedure

To a solution of 6-[(3S,4S)-4-methylpyrrolidin-3-yl]-1-(tetrahydro-2H-pyran-4-yl)-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one hydrogen chloride (493 mg) in 1,2-dichloroethane (10 mL) was added acetic acid (174 mg), 2-methylpyrimidine-5-carbaldehyde (236 mg) and sodium triacetoxy borohydride (635 mg). The reaction mixture was heated at 50° C. overnight. The reaction mixture was concentrated onto silica gel and purified by CombiFlash chromatography to provide the title compound (146 mg). 400 MHz 1H NMR (CDCl3) δ 8.63 (s, 2H), 8.01 (s, 1H), 4.82-4.76 (m, 1H), 4.12-4.08 (m, 2H), 3.68 (d, J=5.0 Hz, 3H), 3.64-3.54 (m, 2H), 3.28 (t, J=8.3 Hz, 1H), 3.04 (d, J=9.9 Hz, 1H), 2.89-2.86 (m, 1H), 2.71 (s, 3H), 2.66-2.62 (m, 1H), 2.49-2.27 (m, 3H), 1.97 (t, J=7.9 Hz, 1H), 1.91-1.83 (m, 2H), 1.19 (d, J=7.05 Hz, 3H). MS: (M+H m/z 410.2).

Workup

concentrationThe reaction mixture was concentrated onto silica gel
custompurified by CombiFlash chromatography

Sources & evidence

ORD record: ord-60fc6ea75d71423bb8948614becfb6bf
Source dataset: uspto-grants-2011_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07964607B2

Reaction notes

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