Sodium Carbonate → 2-Chloro-4-(pyridin-3-yl)pyrimidine

HRID 1790683Notes

Reaction equation

HRID 1790683 reaction equation
[Cl:1][C:2]1[N:7]=[C:6](Cl)[CH:5]=[CH:4][N:3]=1.[N:9]1[CH:14]=[CH:13][CH:12]=[C:11](B(O)O)[CH:10]=1.C(=O)([O-])[O-].[Na+].[Na+]>O1CCCC1.O.[Pd](Cl)Cl.C1(P([C-]2C=CC=C2)C2C=CC=CC=2)C=CC=CC=1.[C-]1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=C1.[Fe+2]>[Cl:1][C:2]1[N:7]=[C:6]([C:11]2[CH:10]=[N:9][CH:14]=[CH:13][CH:12]=2)[CH:5]=[CH:4][N:3]=1

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 775312,4-DichloropyrimidineHCID 27343783-Pyridinylboronic acid

Product 1

HCID 118055432-Chloro-4-(pyridin-3-yl)pyrimidine

Reagents, catalysts & solvents 3

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
60 °C

Procedure

Nitrogen was bubbled through a solution of 2,4-dichloropyrimidine (1 eq) in tetrahydrofuran and water (3:1) for 0.5 h. Bis(diphenylphosphino)ferrocene Palladium(II)chloride (0.05 eq) followed by pyridine-3-boronic acid (1 eq) and sodium carbonate (3 eq) was added and the mixture was heated to 60° C. for 16 h under nitrogen. The reaction mixture was concentrated and partitioned between ethyl acetate and water. The organic layer was washed with brine and dried with sodium sulfate and concentrated. Purification on silica gel gave 2-chloro-4-(3-pyridyl)pyrimidine. MS: MH+=190.

Workup

  1. additionwas added
  2. concentrationThe reaction mixture was concentrated
  3. custompartitioned between ethyl acetate and water
  4. washThe organic layer was washed with brine
  5. dry with materialdried with sodium sulfate
  6. concentrationconcentrated
  7. customPurification on silica gel

Sources & evidence

ORD record
ord-07dd05e6ebd64ac0b8c02b2d0f84ec50
Source dataset
uspto-grants-2006_07
Patent number
US07071216B2

Reaction notes

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