Buchwald–Hartwig amination, record ord-822f9545d2954337a3563b98247b8f3b
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 | 3,5-Dibromopyridine | C₅H₃Br₂N | |
| Reactant | Morpholine | C₄H₉NO | |
| Reagent | sodium 2-methylpropan-2-olate | C₄H₉NaO | |
| Catalyst | Binap, (A+-)- | C₄₄H₃₂P₂ | |
| Catalyst | Bis(dibenzylideneacetone)palladium | C₅₁H₄₂O₃Pd₂ | |
| Solvent | Toluene | C₇H₈ | |
| Product | 4-(5-Bromopyridin-3-yl)morpholine | C₉H₁₁BrN₂O | 50.17% |
Conditions
- Temperature
- 110 °C
Yield
- 50% of 4-(5-Bromopyridin-3-yl)morpholine.
Procedure
Copied from the source record, unedited
A mixture of 3,5-dibromopyridine (3.01 mL, 12.66 mmol), morpholine (1.00 g, 11.48 mmol), TRIS(DIBENZYLIDENEACETONE)DIPALLADIUM (0.210 g, 0.23 mmol), sodium 2-methylpropan-2-olate (1.655 g, 17.22 mmol) and 2,2'-bis(diphenylphosphino)-1,1'-binaphthyl (0.429 g, 0.69 mmol) in degassed toluene (35 mL) was stirred for 16 hours at 110 °C in a sealed vessel under inert atmosphere. Extraction with sat. aq. Na2CO3 solution and AE, then back extraction 2x NaCl sat using DCM. The organics were dried over MgSO4 and evaporated _in vacuo_. The residue (see structure below, LC MS FLA-04227-45-02: 3,5 dimorpholino pyridine) was washed off with diethylether, then AE. The liquors were vaporated _in vacuo_. The residue was purified by chromatography (11 cm SiO2, diameter: 5 cm) eluent: AE/hex 25/75to 45/55 to
The source
This record comes from experimental reaction archive (ord-822f9545d2954337a3563b98247b8f3b). Open the source and check it against what is on this page.
experimental reaction archive record ord-822f9545d2954337a3563b98247b8f3b 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.