Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Dichloromethane | HCID 6344 | — |
| Reactant | Potassium Carbonate | HCID 11430 | — |
| Reactant | 1-(tert-Butoxycarbonyl)indole-2-boronic Acid (contains varying amounts of Anhydride) | HCID 2773302 | — |
| Reactant | HCID 58117291 | HCID 58117291 | — |
| Catalyst | Palladium Chloride | HCID 24290 | — |
| Catalyst | Ferrocene-1,1'-bis-(diphenylphosphine) | HCID 635956 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | HCID 66854719 | HCID 66854719 | — |
Reaction Steps
A microwave vial (20 mL) was charged with intermediate (5d), 5-iodo-methyl-6-oxo-1-(2-trimethylsilanyl-ethoxymethyl)-1,6-dihydro-pyridine-3-carboxylic acid ethyl ester (0.87 g, 1.99 mmol), potassium carbonate (0.825 g, 5.97 mmol), 1-(tert-butoxycarbonyl) indole-2-boronic acid (0.624 g, 2.39 mmol), [1,1′-Bis(diphenylphosphino)ferrocene)]dichloropalladium(II), complex with dichloromethane (0.082 g, 5 mol %), tetrahydrofuran (14 mL) and water (2.3 mL). The contents of the vial were degassed and then heated at 60° C. for 1 hour under microwave irradiation. After cooling, the reaction mixture was partitioned between brine (50 mL) and ethyl acetate (50 mL). The organic layer was separated, dried (Na2SO4) and concentrated in vacuo. The resultant crude product was purified by flash chromatography on SiO2 with hexane—15% ethyl acetate/hexane (gradient) to afford the title compound as a yellow foam, 1.02 g, 97%.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08916591B2 |
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| Source dataset | uspto-grants-2014_12 |
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| ORD ID | ord-492e087285fa45dc8e63bb86617fbdff |
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| Source note | uspto-grants-2014_12 |
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