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Buchwald–Hartwig amination: 4-Bromopyridine → 1-(Pyridin-4-yl)pyrrolidin-3-ol

43% yield, run at 65 °C, as recorded by experimental reaction archive. The written procedure is below.

verified record, 43% yield recorded, Not balanced as written, From experimental reaction archive

Reagents, catalysts and solvents are in the table below.

The atoms, from reactants to products

OCCCNCCCNCCCBrHHHHHHHHH
Reactants · 1/6
breakingformingbond order changesmapped atom that changes

Drawn from the record's atom map: which bonds break and which form between the reactants and products the source listed. It shows a change in connectivity, not a simulated trajectory and not a mechanism.

What was in the flask

RoleSpeciesFormulaYield
Reactant4-BromopyridineC₅H₄BrN—
Reactant4-HydroxypyrrolidineC₄H₉NO—
Reagentlithium bis(trimethylsilyl)azanideC₆H₁₈LiNSi₂—
Catalyst2-(Dicyclohexylphosphino)-2'-(dimethylamino)biphenylC₂₆H₃₆NP—
CatalystBis(dibenzylideneacetone)palladiumC₅₁H₄₂O₃Pd₂—
SolventTetrahydrofuranC₄H₈O—
Product1-(Pyridin-4-yl)pyrrolidin-3-olC₉H₁₂N₂O43.01%

The equation does not balance as written. That is usual for an experimental record: the source listed what it put in and what it measured, not a stoichiometric equation.

Conditions

Temperature
65 °C

Only the dimensions the source stated are listed. Anything absent here was not recorded, and it is not inferred from what the class usually needs.

Yield

  • 43% of 1-(Pyridin-4-yl)pyrrolidin-3-ol.

Procedure

Copied from the source record, unedited

In a 50 ml round bottomed flask THF (1 mL) was added to a mixture of 4-bromopyridine (1 g, 6.33 mmol), pyrrolidin-3-ol (0.662 g, 7.60 mmol),2-(dimethylamino)-2'-(dicyclohexylphosphino)biphenyl (0.249 g, 0.63 mmol) and Pd2(dba)3 (0.580 g, 0.63 mmol). To the slurry lithium bis(trimethylsilyl)amide (13.92 mL, 13.92 mmol) was added dropwise at 0 °C and the solution was refluxed at 65 °C overnight for 20 hrs. The reaction mixture was passed through celite, concentrated and column purified (0-20%MeOH/DCM) to obtain 0.447 mg of product.

The source

This record comes from experimental reaction archive (ord-15613520ef9b4d099659a0a3ac545228). Open the source and check it against what is on this page.

  • experimental reaction archive record ord-15613520ef9b4d099659a0a3ac545228 from dataset "750 AstraZeneca ELN dataset" (url: https://chemrxiv.org/engage/chemrxiv/article-details/60c9e3f37792a23bfdb2d471). No atom mapping is provided by the source.

    experimental record · quality medium · source

experimental reaction record.

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.