Buchwald–Hartwig amination, record ord-71ad501d78264f9aa8b8fb6c66e7e044
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 | 5-Chloro-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidine-3-carbonitrile | C₁₀H₈ClN₅ | |
| Reactant | N-(5-amino-4-fluoro-2-methylphenyl)acetamide | C₉H₁₁FN₂O | |
| Reagent | Cesium carbonate | CCs₂O₃ | |
| Catalyst | Di-tert-butyl(2',4',6'-tris(propan-2-yl)-(1,1'-biphenyl)-2-yl)phosphane | C₂₉H₄₅P | |
| Catalyst | Bis(dibenzylideneacetone)palladium | C₅₁H₄₂O₃Pd₂ | |
| Solvent | 1,4-Dioxane | C₄H₈O₂ | |
| Product | N-[5-[[3-cyano-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-yl]amino]-4-fluoro-2-methylphenyl]acetamide | C₁₉H₁₈FN₇O | 20.63% |
Conditions
- Temperature
- 150 °C
Yield
- 21% of N-[5-[[3-cyano-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-yl]amino]-4-fluoro-2-methylphenyl]acetamide.
Procedure
Copied from the source record, unedited
In 20 ml microwave vial were added 5-chloro-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidine-3-carbonitrile (200 mg, 0.86 mmol), N-(5-amino-4-fluoro-2-methylphenyl)acetamide (164 mg, 0.90 mmol), Pd2dba3 (39.2 mg, 0.04 mmol), di-tert- butyl(2',4',6'-triisopropylbiphenyl-2-yl)phosphine (37.5 mg, 0.09 mmol) and Cs2CO3 (837 mg, 2.57 mmol). The vessel was fitted with septum, gas inlet and dioxane (8 mL) was added via syringe. The resulting suspension was stirred for 5 min. under N2. The septum and gas inlet quickly replaced with microwave vial cap and the mixture was heated to 150oC under microwave irradiation for 30 min. The reaction mixture filtered through celite, filtrate concentrated, combined with EN02368-53 experiment and purified by ISCO column (0-5% MeOH-CH2Cl2). The obtained compound tr
The source
This record comes from experimental reaction archive (ord-71ad501d78264f9aa8b8fb6c66e7e044). Open the source and check it against what is on this page.
experimental reaction archive record ord-71ad501d78264f9aa8b8fb6c66e7e044 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.