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

HRID 238013Notes

Reaction equation

[Br:1][C:2]1[CH:3]=[C:4](B2OC(C)(C)C(C)(C)O2)[CH:5]=[C:6]([O:8][CH3:9])[CH:7]=1.I[C:20]1[C:28]2[C:23](=[N:24][CH:25]=[N:26][C:27]=2[NH2:29])[N:22]([CH:30]([CH3:32])[CH3:31])[N:21]=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>[Br:1][C:2]1[CH:3]=[C:4]([C:20]2[C:28]3[C:23](=[N:24][CH:25]=[N:26][C:27]=3[NH2:29])[N:22]([CH:30]([CH3:32])[CH3:31])[N:21]=2)[CH:5]=[C:6]([O:8][CH3:9])[CH:7]=1

Participants

Conditions

Temperature: 80 °C

Procedure

A solution of 2-(3-bromo-5-methoxyphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (137 mg, 0.43 mmol) in EtOH (3.3 ml) was added to a solution of 3-iodo-1-isopropyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine (65 mg, 0.216 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 RP-HPLC (MeCN:H2O:0.1% TFA) to yield BA85 (28 mg, 36% yield). ESI-MS (M+H)+ m/z calcd 362.1, found 362.0.

Workup

temperatureAfter cooling
extractionthe reaction was extracted with saturated NaCl and CH2Cl2
concentrationconcentrated in vacuo
custompurified by RP-HPLC (MeCN:H2O:0.1% TFA)

Sources & evidence

ORD record: ord-de3f718eeba146a1a81053488d406011
Source dataset: uspto-grants-2014_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08642604B2

Reaction notes

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