Cesium fluoride → 3-(4-amino-1-((1-phenyl-1H-benzo[d]imidazol-2-yl)methyl)-1H-pyrazolo[3,4-d]pyrimidin-3-yl)-5-fluorophenol

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Reaction Steps

A mixture of 3-iodo-1-((1-phenyl-1H-benzo[d]imidazol-2-yl)methyl)-1H-pyrazolo[3,4-d]pyrimidin-4-amine 141 (1.0 g, 2.14 mmol), 3-fluoro-5-hydroxyphenylboronic acid (0.4 g, 2.56 mmol), Pd(dppf)Cl2 (0.2 g) and CsF (0.65 g, 4.3 mmol) in DME (20 mL) and H2O (2 mL) was refluxed overnight. Then the mixture was cooled to room temperature, added H2O (50 mL) and extracted with EtOAc (20 mL×3). The combined organic layers were washed with brine, dried over Na2SO4 and then concentrated in vacuo. The residue was treated with CH2Cl2 and filtered to give 153 (300 mg, yield 31%) as a grey solid. LCMS (ESI), M+H+=450.16. 1HNMR (400 MHz, DMSO) δ 5.795 (s, 2H), 6.606-6.633 (d, J=10.8 Hz, 1H), 6.720-6.724 (d, J=8.8 Hz, 1H), 6.800 (s, 2H), 7.065-7.083 (d, J=7.2 Hz, 1H), 7.213-7.260 (m, 2H), 7.400 (s, 5H), 7.657-7.676 (d, J=7.6 Hz, 1H), 8.119 (s, 1H), 10.139 (s, 1H)

Provenance & Evidence