2-Cyclopenten-1-one → HCID 59326823, compound

HRID 1880166Notes

Reaction equation

HRID 1880166 reaction equation
Br[C:2]1[C:3]([F:8])=[N:4][CH:5]=[CH:6][CH:7]=1.[C:9]1(=[O:14])[CH2:13][CH2:12][CH:11]=[CH:10]1.CN(C1CCCCC1)C1CCCCC1>O1CCOCC1.CCOC(C)=O.CC(C)([P](C(C)(C)C)([Pd][P](C(C)(C)C)(C(C)(C)C)C(C)(C)C)C(C)(C)C)C>[F:8][C:3]1[C:2]([C:11]2[CH2:12][CH2:13][C:9](=[O:14])[CH:10]=2)=[CH:7][CH:6]=[CH:5][N:4]=1

Participants

7

Reactant 3

HCID 135882-Cyclopenten-1-oneHCID 24210N-Methyl dicyclohexylamineHCID 27627783-Bromo-2-fluoropyridine

Product 1

HCID 59326823HCID 59326823, compound

Reagents, catalysts & solvents 3

HCID 178418851HCID 178418851, compoundCatalystHCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
23 °C

Procedure

A solution of 3-bromo-2-fluoropyridine (4 g, 22.73 mmol), 2-cyclopenten-1-one (7.35 mL, 91 mmol), n-methyldicyclohexylamine (12.05 mL, 56.8 mmol) and bis(tri-tert-butylphosphine)palladium (0) (0.581 g, 1.136 mmol) in 1,4-dioxane (50 mL) was heated to 105° C. in a capped vessel. After 21 h, the reaction was cooled to 23° C., diluted with EtOAc (400 mL) and washed with water (150 mL) and brine (150 mL), dried over MgSO4, concentrated in vacuo and purified by silica gel chromatography (eluant: 15-50% EtOAc/hexane), affording the product as a yellow solid. MS (ESI, pos. ion) m/z: 178.0 (M+1).

Workup

  1. washwashed with water (150 mL) and brine (150 mL)
  2. dry with materialdried over MgSO4
  3. concentrationconcentrated in vacuo
  4. custompurified by silica gel chromatography (eluant: 15-50% EtOAc/hexane)

Sources & evidence

ORD record
ord-c21da1a1cbe64efe98c403a645a88026
Source dataset
uspto-grants-2012_11
Patent number
US08318718B2

Reaction notes

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