Pyridine → HCID 66777683, compound

HRID 2090944Notes

Reaction equation

HRID 2090944 reaction equation
[CH3:1][O:2][CH2:3][C:4]1[C:8]([C:9]([O:11][CH3:12])=[O:10])=[CH:7][NH:6][N:5]=1.[CH3:13][O:14][C:15]1[CH:16]=[C:17](B(O)O)[CH:18]=[CH:19][CH:20]=1.N1C=CC=CC=1>CN(C)C(=O)C.C([O-])(=O)C.[Cu+2].C([O-])(=O)C>[CH3:1][O:2][CH2:3][C:4]1[C:8]([C:9]([O:11][CH3:12])=[O:10])=[CH:7][N:6]([C:19]2[CH:18]=[CH:17][CH:16]=[C:15]([O:14][CH3:13])[CH:20]=2)[N:5]=1

Participants

6

Reactant 3

HCID 1049PyridineHCID 2734370(3-Methoxyphenyl)boronic acidHCID 178494719HCID 178494719, compound

Product 1

HCID 66777683HCID 66777683, compoundYield 24.2%

Reagents, catalysts & solvents 2

HCID 8895Cupric acetateCatalystHCID 31374DimethylacetamideSolvent

Procedure

To a solution of methyl 3-(methoxymethyl)-1H-pyrazole-4-carboxylate (2.8 g) synthesized in Example 29 (1) in N,N-dimethylacetamide (50 mL) were added 3-methoxyphenylboronic acid (5.0 g), copper acetate (6.0 g) and pyridine (5.3 mL), and the mixture was stirred at room temperature overnight. The reaction mixture was filtered through celite, 1N hydrochloric acid (50 mL) was added to the filtrate, and the mixture was extracted with diethyl ether. The extract was washed with brine, dried over magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:2, volume ratio) to give the title object compound (1.1 g, 23%) as a pale-yellow oil.

Workup

  1. filtrationThe reaction mixture was filtered through celite, 1N hydrochloric acid (50 mL)
  2. additionwas added to the filtrate
  3. extractionthe mixture was extracted with diethyl ether
  4. washThe extract was washed with brine
  5. dry with materialdried over magnesium sulfate
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by silica gel column chromatography (ethyl acetate:hexane=1:2, volume ratio)

Sources & evidence

ORD record
ord-f81707197667457eae6d9eea05568191
Source dataset
uspto-grants-2013_05
Patent number
US08436043B2

Reaction notes

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