Sodium Carbonate → HCID 57825691, compound

HRID 2089108Notes

Reaction equation

HRID 2089108 reaction equation
C(=O)([O-])[O-].[Na+].[Na+].[CH:7]([C:9]1[CH:14]=[CH:13][C:12](B(O)O)=[CH:11][CH:10]=1)=[O:8].[Cl:18][C:19]1[CH:20]=[C:21]([CH2:26][OH:27])[CH:22]=[N:23][C:24]=1Cl>COCCOC.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:18][C:19]1[C:24]([C:12]2[CH:13]=[CH:14][C:9]([CH:7]=[O:8])=[CH:10][CH:11]=2)=[N:23][CH:22]=[C:21]([CH2:26][OH:27])[CH:20]=1

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 5910734-Formylphenylboronic AcidHCID 21882961(5,6-Dichloropyridin-3-yl)methanol

Product 1

HCID 57825691HCID 57825691, compoundYield 74%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 80711,2-DimethoxyethaneSolvent

Procedure

2.68 g of sodium carbonate (25.3 mmol), 1.15 g of 4-formylphenylboronic acid (7.66 mmol), and 0.27 g of Pd(PPh3)4 were added to 1.5 g of (5,6-dichloropyridin-3-yl)methanol (8.43 mmol) dissolved in 30 mL of 1,2-dimethoxyethane and 30 mL of distilled water, and refluxed under heating and stirring for 18 hours. The mixture was cooled to room temperature, and concentrated under about 50% reduced pressure to extract the aqueous layer with ethyl acetate. The organic layer was dried over magnesium sulfate, and concentrated under reduced pressure. The residue was separated by column chromatography (eluting solvent:chloroform/methanol=10/1) to obtain 1.40 g of 4-(3-chloro-5-(hydroxymethyl)pyridin-2-yl)benzaldehyde (yield 74%).

Workup

  1. temperatureunder heating
  2. concentrationconcentrated under about 50% reduced pressure
  3. extractionto extract the aqueous layer with ethyl acetate
  4. dry with materialThe organic layer was dried over magnesium sulfate
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was separated by column chromatography (eluting solvent:chloroform/methanol=10/1)

Sources & evidence

ORD record
ord-0afa8ef8fffd402f9d427e2361f8c22e
Source dataset
uspto-grants-2013_05
Patent number
US08436022B2

Reaction notes

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