Buchwald–Hartwig amination: 5-Chloro-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidine-3-carbonitrile → N-[5-[[3-cyano-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-yl]amino]-2-[3-(dimethylamino)propyl-methylamino]phenyl]acetamide
29% yield, run at 150 °C, as recorded by experimental reaction archive. The written procedure is below.
The atoms, from reactants to products
What was in the flask
| Role | Species | Formula | Yield |
|---|---|---|---|
| Reactant | 5-Chloro-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidine-3-carbonitrile | C₁₀H₈ClN₅ | |
| Reactant | CC(=O)Nc1cc(N)ccc1N(C)CCCN(C)C | C₁₄H₂₄N₄O | |
| Reagent | Cesium carbonate | CCs₂O₃ | |
| Catalyst | 1,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine) | C₃₉H₃₂OP₂ | |
| Catalyst | Bis(dibenzylideneacetone)palladium | C₅₁H₄₂O₃Pd₂ | |
| Solvent | Dimethylacetamide | C₄H₉NO | |
| Product | N-[5-[[3-cyano-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-yl]amino]-2-[3-(dimethylamino)propyl-methylamino]phenyl]acetamide | C₂₄H₃₁N₉O | 29% |
Conditions
- Temperature
- 150 °C
Yield
- 29% of N-[5-[[3-cyano-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-yl]amino]-2-[3-(dimethylamino)propyl-methylamino]phenyl]acetamide.
Other recorded runs with the same starting material
No other run in the library makes this product. These runs of the same class start from one of the same reactants, which is the nearest company this record has.
- N-[3-[[3-cyano-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-yl]amino]phenyl]acetamide67%
- N-[5-[[3-cyano-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-yl]amino]-2-[2-hydroxyethyl(methyl)amino]phenyl]acetamide51%
- 7-(Cyclopropylamino)-5-[6-(hydroxymethyl)indol-1-yl]pyrazolo[1,5-a]pyrimidine-3-carbonitrile48%
- N-[5-[[3-cyano-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-yl]amino]-2-[(3S)-3-(dimethylamino)pyrrolidin-1-yl]phenyl]acetamide37%
- 5-[4-Chloro-3-(methylsulfonylmethyl)anilino]-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidine-3-carbonitrile35%
- N-[5-[[3-cyano-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-yl]amino]-2-(4-methylpiperazin-1-yl)phenyl]acetamide33%
- Acetamide, N-[5-[[3-cyano-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-yl]amino]-2-[[2-(dimethylamino)ethyl]methylamino]phenyl]-29%
- N-[5-[[3-cyano-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-yl]amino]-2-methylphenyl]acetamide23%
- N-[5-[[3-cyano-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-yl]amino]-4-fluoro-2-methylphenyl]acetamide21%
- N-[1-[3-cyano-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-yl]indol-6-yl]-N-methylacetamide16%
- N-[2-[[3-cyano-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-yl]amino]-5-methyl-4-pyridinyl]acetamide11%
- N-[5-[[3-cyano-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidin-5-yl]amino]-2-propan-2-ylphenyl]acetamide10%
Procedure
Copied from the source record, unedited
In a 40mL vial (t=g) was 5-chloro-7-(cyclopropylamino)pyrazolo[1,5-a]pyrimidine-3-carbonitrile (70mg, 0.30 mmol), N-(5-amino-2-((3-(dimethylamino)propyl)(methyl)amino)phenyl)acetamide (79 mg, 0.30 mmol), and cesium carbonate (195 mg, 0.60 mmol) in DMA (0.5 mL) (),Pd2(dba)3 (13.72 mg, 0.01 mmol) and (9,9-dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine) (17.33 mg, 0.03 mmol) were added. to give a brown suspension. The vial was filled with N2, 150C microwave for 30 min. LCMS comletion. MeOH (2 mL) was added to the reaction mixture. filtered. The mother liquid solvent was removed by ratovapor to yield sticky oil. The crude product was loaded on ISCO (Hex to Hex:EtOAc To EtOAc to EtOAc:MeOH=10:1) to give sticky oil. The product was not pure. It was purified by to give N-(5-(3-cyano-7-(
The source
This record comes from experimental reaction archive (ord-f3666d844cbc446dba498aa63de90f9a). Open the source and check it against what is on this page.
experimental reaction archive record ord-f3666d844cbc446dba498aa63de90f9a 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.
Where to next
More Buchwald–Hartwig amination records
Other runs of this class, one page per distinct transformation.
Open in the Reaction Lab
The atom map, the bonds that break and form, and records running the same transformation.
Percent yield calculator
Work out a yield from what you isolated against what the equation allows.
Molecules A–Z
Every named molecule, with its identifiers and sources.