HuagongsheHuagongshe Chemistry Print Report · For research reference only
2-Bromopyridine → 2-(Pyridin-2-yl)phenol
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 2-Bromopyridine | HCID 7973 | — |
| Reactant | 1,2-Dimethoxyethane | HCID 8071 | — |
| Reactant | Potassium Carbonate | HCID 11430 | — |
| Reactant | 2-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenol | HCID 2734622 | — |
| Catalyst | HCID 178418397 | HCID 178418397 | — |
| Solvent | Water | HCID 962 | — |
| Product | 2-(Pyridin-2-yl)phenol | HCID 135489221 | 80.1% |
Reaction Steps
9.5 g (˜43 mmol) of 2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol, 6.8 g (˜43 mmol) of 2-bromopyridine, 1.5 g (1.3 mmol) of Pd(PPh3)4, and 16 g (116 mmol) of K2CO3 were added to a 250 mL round bottle flask, along with a solvent mixture of 120 mL of dimethoxyethane and 150 mL of water. The mixture was heated to reflux for 24 hours under nitrogen. The reaction mixture was extracted with ethyl acetate and the organic phase was separated on silica gel column with 15% ethyl acetate as elute solvent. ˜5.9 g (yield ˜80%) of 2-(2-hydroxyphenyl)pyridine was obtained as a colorless liquid.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US07198859B2 |
| Source dataset | uspto-grants-2007_04 |
| ORD ID | ord-9f370215fbb14d9c989c0b8702e8aa45 |
| Source note | uspto-grants-2007_04 |