Methanol → (R)-2-(3-(4-amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)piperidine-1-carbonyl)-4,4-dimethylpent-2-enenitrile

HRID 409047Notes

Reaction equation

[NH2:1][C:2]1[N:7]=[CH:6][N:5]=[C:4]2[N:8]([CH:24]3[CH2:29][CH2:28][CH2:27][N:26]([C:30](=[O:34])[CH2:31][C:32]#[N:33])[CH2:25]3)[N:9]=[C:10]([C:11]3[CH:16]=[CH:15][C:14]([O:17][C:18]4[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=4)=[CH:13][CH:12]=3)[C:3]=12.CO.N1CCCCC1.[CH:43](=O)[C:44]([CH3:47])([CH3:46])[CH3:45]>ClCCl>[NH2:1][C:2]1[N:7]=[CH:6][N:5]=[C:4]2[N:8]([C@@H:24]3[CH2:29][CH2:28][CH2:27][N:26]([C:30]([C:31](=[CH:43][C:44]([CH3:47])([CH3:46])[CH3:45])[C:32]#[N:33])=[O:34])[CH2:25]3)[N:9]=[C:10]([C:11]3[CH:12]=[CH:13][C:14]([O:17][C:18]4[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=4)=[CH:15][CH:16]=3)[C:3]=12

Participants

Conditions

Temperature: 30 °C

Procedure

A mixture of 3-[3-[4-amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl]piperidin-1-yl]-3-oxopropanenitrile (150 mg, 0.33 mmol, 1.00 equiv), methanol (15 mL), dichloromethane (5 mL), piperidine (56 mg, 0.66 mmol, 2 equiv) and pivalaldehyde (142 mg, 1.66 mmol, 5 equiv) was stirred for 48 h at 30° C. in a 25-mL sealed tube. The resulting mixture was concentrated under vacuum. The residue was applied onto a silica gel column with dichloromethane/methanol (100/1) to give 45 mg (26%) of (R)-2-(3-(4-amino-3-(4-phenoxyphenyl)-1H-pyrazolo[3,4-d]pyrimidin-1-yl)piperidine-1-carbonyl)-4,4-dimethylpent-2-enenitrile as a white solid. MS (ESI, pos. ion) m/z: 522 (M+1) 1HNMR (300 MHz, CDCl3, ppm) 8.396 (1H, s), 7.684˜7.656 (2H, d, J=8.4), 7.440˜7.388 (2H, t), 7.222˜7.092 (5H, m), 6.956 (1H, s), 5.613 (2H, s), 5.006˜4.909 (1H, m), 4.626˜3.290 (4H, m), 2.419˜1.732 (4H, m), 1.275 (9H, s).

Workup

customsealed tube
concentrationThe resulting mixture was concentrated under vacuum

Sources & evidence

ORD record: ord-5e4cd87633f34e15a687dbf9da7908e7
Source dataset: uspto-grants-2014_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08759358B1

Reaction notes

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