Sodium Carbonate → 4-(4-Amino-1-isopropyl-1H-pyrazolo[3,4-d]pyrimidin-3-yl)-benzenesulfonamide

HRID 237967Notes

Reaction equation

B1([C:10]2[CH:15]=[CH:14][C:13]([S:16]([NH2:19])(=[O:18])=[O:17])=[CH:12][CH:11]=2)OC(C)(C)C(C)(C)O1.I[C:21]1[C:29]2[C:24](=[N:25][CH:26]=[N:27][C:28]=2[NH2:30])[N:23]([CH:31]([CH3:33])[CH3:32])[N:22]=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>[NH2:30][C:28]1[N:27]=[CH:26][N:25]=[C:24]2[N:23]([CH:31]([CH3:33])[CH3:32])[N:22]=[C:21]([C:10]3[CH:11]=[CH:12][C:13]([S:16]([NH2:19])(=[O:17])=[O:18])=[CH:14][CH:15]=3)[C:29]=12

Participants

Conditions

Temperature: 80 °C

Procedure

A solution of benzenesulfonamide-4-boronic acid pinacol ester (23 mg, 0.08 mmol) in EtOH (3.3 ml) was added to a solution of 3-iodo-1-isopropyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine (20 mg, 0.07 mmol) in DME (12 ml). Pd(PPh3)4 (16 mg, 0.014 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 BA14 (2.2 mg, 10% yield). ESI-MS (M+H)+ m/z calcd 333.1, found 333.1.

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-0d9c795c56994f8a8db9ffe21f471c48
Source dataset: uspto-grants-2014_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08642604B2

Reaction notes

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