Sodium Carbonate → 3-(2,5-difluoro-4-methoxyphenyl)-1-isopropyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine

HRID 238002Notes

Reaction equation

[F:1][C:2]1[CH:7]=[C:6]([O:8][CH3:9])[C:5]([F:10])=[CH:4][C:3]=1B(O)O.I[C:15]1[C:23]2[C:18](=[N:19][CH:20]=[N:21][C:22]=2[NH2:24])[N:17]([CH:25]([CH3:27])[CH3:26])[N:16]=1.C([O-])([O-])=O.[Na+].[Na+]>CCO.COCCOC.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[F:1][C:2]1[CH:7]=[C:6]([O:8][CH3:9])[C:5]([F:10])=[CH:4][C:3]=1[C:15]1[C:23]2[C:18](=[N:19][CH:20]=[N:21][C:22]=2[NH2:24])[N:17]([CH:25]([CH3:27])[CH3:26])[N:16]=1

Participants

Conditions

Temperature: 80 °C

Procedure

A solution of 2,5-difluoro-4-methoxyphenylboronic acid (84 mg, 0.45 mmol) in EtOH (3.3 ml) was added to a solution of 3-iodo-1-isopropyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine (54 mg, 0.18 mmol) in DME (12 ml). Pd(PPh3)4 (30 mg, 0.03 mmol) and saturated Na2CO3 (1.9 ml) were added and the reaction was heated to 80° C. under an argon atmosphere overnight. After cooling, the reaction was extracted with saturated NaCl and CH2Cl2. Organic phases were combined, concentrated in vacuo and purified by silica gel column chromatography [MeOH—CH2Cl2, 2:98] to yield BA63 (50 mg, 17% yield). ESI-MS (M+H)+ m/z calcd 320.1, found 320.0.

Workup

temperatureAfter cooling
extractionthe reaction was extracted with saturated NaCl and CH2Cl2
concentrationconcentrated in vacuo
custompurified by silica gel column chromatography [MeOH—CH2Cl2, 2:98]

Sources & evidence

ORD record: ord-6450909864b14ae19d401835de639971
Source dataset: uspto-grants-2014_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08642604B2

Reaction notes

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