Buchwald–Hartwig amination, record ord-b165e514f9f846c2872fe8f816e6b2d7
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-Bromo-2-(4-methanesulfonylbenzyloxy)pyridine | C₁₃H₁₂BrNO₃S | |
| Reactant | tert-Butyl piperazine-1-carboxylate | C₉H₁₈N₂O₂ | |
| Reagent | sodium 2-methylpropan-2-olate | C₄H₉NaO | |
| Catalyst | Binap, (A+-)- | C₄₄H₃₂P₂ | |
| Catalyst | Bis(dibenzylideneacetone)palladium | C₅₁H₄₂O₃Pd₂ | |
| Solvent | Toluene | C₇H₈ | |
| Product | Tert-butyl 4-[6-[(4-methylsulfonylphenyl)methoxy]-3-pyridinyl]piperazine-1-carboxylate | C₂₂H₂₉N₃O₅S | 42.6% |
Conditions
- Temperature
- 80 °C
Yield
- 43% of Tert-butyl 4-[6-[(4-methylsulfonylphenyl)methoxy]-3-pyridinyl]piperazine-1-carboxylate.
Procedure
Copied from the source record, unedited
2,2'-bis(diphenylphosphino)-1,1'-binaphthyl (48.3 mg, 0.08 mmol) was added in one portion to 5-bromo-2-(4-(methylsulfonyl)benzyloxy)pyridine (257.9 mg, 0.75 mmol), tert-butyl piperazine-1-carboxylate (160.9 mg, 0.86 mmol), TRIS(DIBENZYLIDENEACETONE)DIPALLADIUM(0) (51.1 mg, 0.06 mmol) and sodium 2-methylpropan-2-olate (120.1 mg, 1.25 mmol) in toluene (10 mL). N2 was bubbled through the solvent for 15 minutes.The resulting mixture was stirred at 80 °C for over night under N2.The reaction mixture was filtered through celite. The reaction mixture was evaporated to dryness and redissolved in EtOAc (75 mL), and washed sequentially with water (2x75 mL) and saturated brine (100 mL). The organic layer was dried over MgSO4, filtered and evaporated to afford crude product. The crude product was purif
The source
This record comes from experimental reaction archive (ord-b165e514f9f846c2872fe8f816e6b2d7). Open the source and check it against what is on this page.
experimental reaction archive record ord-b165e514f9f846c2872fe8f816e6b2d7 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.