Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Methanol | HCID 887 | — |
| Reactant | Dimethylformamide | HCID 6228 | — |
| Reactant | Potassium Carbonate | HCID 11430 | — |
| Reactant | 2-chloro-1-[1-(4-fluorophenyl)-6,7-dihydro-5H-pyrazolo[4,3-b]pyridine-4-yl]ethanone | HCID 86711668 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Solvent | Ethyl Acetate | HCID 8857 | — |
| Product | HCID 73335332 | HCID 73335332 | 43% |
Reaction Steps
The carbinol obtained above (69 mg, 0.4 mmol) was diluted in 1.2 mL of THF and 500 μL of DMF and treated with K2CO3 (111 mg, 0.8 mmol) and 2-chloro-1-(1-(4-fluorophenyl)-6,7-dihydro-1H-pyrazolo[4,3-b]pyridin-4(5H)-yl)ethanone (118 mg, 0.4 mmol). The slurry was heated to 75° C. The reaction slurry was diluted with EtOAc and washed with brine, dried on MgSO4, filtered, and concentrated. The residue was purified by reverse phase HPLC (C18 column, acetonitrile-H2O with 0.1% TFA as eluent) to provide 69 mg of the desired product (43%) as a white solid. 1H NMR (400 MHz, CDCl3, mixture of rotamers) δ 8.37 (s, 0.8H), 7.63 (s, 0.2H), 7.42-7.46 (m, 2H), 7.13-7.19 (m, 2H), 5.14 (s, 0.4H), 5.03 (s, 1.6H), 3.90 (m, 0.4H), 3.87 (m, 1.6H), 2.86 (m, 2H), 2.28 (s, 2.4H), 2.25 (s, 0.6H), 2.05-2.13 (m, 2H), 1.62 (s, 6H); MS: (ES) m/z calculated for C21H24ClFN5O2 [M+H]+ 432.2, found 432.1.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US09181241B2 |
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| Source dataset | uspto-grants-2015_11 |
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| ORD ID | ord-a0e8a73a92664b80897fcc5eb494f41d |
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| Source note | uspto-grants-2015_11 |
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