Water → methyl 4-cyano-2-hydroxy-3-methyl-5-[4-(1H-pyrazol-1-yl)benzyl]benzoate

HRID 629373

Reaktionsgleichung

[C:1]([C:3]1[C:12](B2OC(C)(C)C(C)(C)O2)=[CH:11][C:6]([C:7]([O:9][CH3:10])=[O:8])=[C:5]([OH:22])[C:4]=1[CH3:23])#[N:2].Cl[CH2:25][C:26]1[CH:31]=[CH:30][C:29]([N:32]2[CH:36]=[CH:35][CH:34]=[N:33]2)=[CH:28][CH:27]=1.O.O.O.P([O-])([O-])([O-])=O.[K+].[K+].[K+].O>O1CCOCC1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2].ClCCl>[C:1]([C:3]1[C:12]([CH2:25][C:26]2[CH:27]=[CH:28][C:29]([N:32]3[CH:36]=[CH:35][CH:34]=[N:33]3)=[CH:30][CH:31]=2)=[CH:11][C:6]([C:7]([O:9][CH3:10])=[O:8])=[C:5]([OH:22])[C:4]=1[CH3:23])#[N:2]

Komponenten

Reaktionsbedingungen

Temperatur: 90 °C

Versuchsvorschrift

To a solution of methyl 4-cyano-2-hydroxy-3-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate (3.50 g) in 1,4-dioxane (30.0 mL) were added 1-(4-(chloromethyl)phenyl)-1H-pyrazole (2.12 g), tripotassium phosphate trihydrate (5.90 g) and [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II) dichloromethane adduct (0.34 g), and the mixture was stirred at 90° C. for 16 hr under nitrogen atmosphere. The reaction mixture was poured into water, and the mixture was extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by flash silica gel column chromatography (ethyl acetate/petroleum ether) to give the title compound (0.86 g).

Aufarbeitung

extractionthe mixture was extracted with ethyl acetate
dry with materialThe organic layer was dried over anhydrous sodium sulfate
customthe solvent was evaporated under reduced pressure
customThe residue was purified by flash silica gel column chromatography (ethyl acetate/petroleum ether)

Quellen und Nachweise

ORD-Eintrag: ord-520b65b2fb3841b8a9cfc28f5e296dbf
Quelldatensatz: uspto-grants-2016_04
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US09315458B2

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