Buchwald–Hartwig amination, record ord-67600027c34a4dbf95ee52ac1b8cec86
One recorded run of this reaction. Below is what the source recorded, and nothing added to it.
What was in the flask
| Role | Species | Formula | Yield |
|---|---|---|---|
| Reactant | 2-Chloro-4-iodo-5-(trifluoromethyl)pyridine | C₆H₂ClF₃IN | |
| Reactant | 2-amino-6-methoxy-N-methylbenzamide | C₉H₁₂N₂O₂ | |
| Reagent | Cesium carbonate | CCs₂O₃ | |
| Catalyst | 1,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine) | C₃₉H₃₂OP₂ | |
| Catalyst | Palladium (II) acetate | C₄H₈O₄Pd | |
| Solvent | 1,4-Dioxane | C₄H₈O₂ | |
| Product | 2-(2-Chloro-5-(trifluoromethyl)pyridin-4-ylamino)-6-methoxy-N-methylbenzamide | C₁₅H₁₃ClF₃N₃O₂ | 66.13% |
Conditions
- Temperature
- 90 °C
Yield
- 66% of 2-(2-Chloro-5-(trifluoromethyl)pyridin-4-ylamino)-6-methoxy-N-methylbenzamide.
Procedure
Copied from the source record, unedited
2-chloro-4-iodo-5-(trifluoromethyl)pyridine (420 mg, 1.37 mmol), 2-amino-6-methoxy-N-methylbenzamide (246 mg, 1.37 mmol), diacetoxypalladium (24.54 mg, 0.11 mmol), (9,9-dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine) (126 mg, 0.22 mmol) and cesium carbonate (534 mg, 1.64 mmol) were mixed together in dioxane (8 mL). Reaction was degassed with argon and was stirred at 90 °C overnight (15 hours) under argon. Reaction was filtered, washed with CH2Cl2 and the filtrate was concentrated to dryness. The crude product was purified by flash chromatography on silica gel eluting with 10 to 30% ethyl acetate in petroleum ether. The solvent was evaporated to dryness to afford 2-(2-chloro-5-(trifluoromethyl)pyridin-4-ylamino)-6-methoxy-N-methylbenzamide (325 mg, 66.1 %) as a white solid.
The source
This record comes from experimental reaction archive (ord-67600027c34a4dbf95ee52ac1b8cec86). Open the source and check it against what is on this page.
experimental reaction archive record ord-67600027c34a4dbf95ee52ac1b8cec86 from dataset "750 AstraZeneca ELN dataset" (url: https://chemrxiv.org/engage/chemrxiv/article-details/60c9e3f37792a23bfdb2d471). No atom mapping is provided by the source.
How to read this record
This is one experiment, not a rule. It says that on one occasion these species were combined under these conditions and this came out. It does not say the reaction will give the same result on your substrate, and nothing on the page has been generalised into a claim that it would.
The pathway is a separate question, kept on separate pages. A mechanism here is the canonical arrow pushing for a class, run on real structures and labelled rule-derived. It is not evidence, and this record is not a mechanism.