Diethyl Ether → 4-(4-chlorophenyl)-5-(2,4-dichlorophenyl)-4-(1H-1,2,4-triazol-1-yl)methyl-1,3-dioxolane

HRID 65023

Reaktionsgleichung

Reaktionsgleichung von HRID 65023
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]([OH:25])([CH2:19][N:20]2[CH:24]=[N:23][CH:22]=[N:21]2)[CH:9]([C:11]2[CH:16]=[CH:15][C:14]([Cl:17])=[CH:13][C:12]=2[Cl:18])[OH:10])=[CH:4][CH:3]=1.[H-].[Na+].Br[CH2:29]Cl.CCOCC>CN(C)C=O>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2([CH2:19][N:20]3[CH:24]=[N:23][CH:22]=[N:21]3)[CH:9]([C:11]3[CH:16]=[CH:15][C:14]([Cl:17])=[CH:13][C:12]=3[Cl:18])[O:10][CH2:29][O:25]2)=[CH:4][CH:3]=1

Komponenten

6

Edukt 4

HCID 3283Diethyl EtherHCID 6333BromochloromethaneHCID 24758Sodium hydrideHCID 202350372-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-3-(1H-1,2,4-triazol-1-yl)-1,2-propanediol

Produkt 1

HCID 137270104-(4-chlorophenyl)-5-(2,4-dichlorophenyl)-4-(1H-1,2,4-triazol-1-yl)methyl-1,3-dioxolaneAusbeute 54,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

To a solution of 500 mg of 2-(4-chlorophenyl)-1-(2,4-dichlorophenyl)-3-(1H-1,2,4-triazol-1-yl)-1,2-propanediol in 5 ml of dry dimethylformamide is added 180 mg of 50% mineral oil dispersion of sodium hydride under ice cooling. Five minutes later 490 mg of bromochloromethane is added to the mixture, which is allowed to react at a temperature of 50° C. for 1 hour. The reaction mixture is mixed with ice water and shaken with ether. The ethereal layer is washed with water, dried over anhydrous sodium sulfate and concentrated. The residue is chromatographed on a column of silica-gel, which is eluted with 3% methanol-methylene chloride. The eluate is concentrated and the residue is crystallized from ethyl acetate to give 280 mg of 4-(4-chlorophenyl)-5-(2,4-dichlorophenyl)-4-(1H-1,2,4-triazol-1-yl)methyl-1,3-dioxolane as crystals melting at 201 ° to 203° C. The yield is 54%.

Aufarbeitung

  1. customto react at a temperature of 50° C. for 1 hour
  2. washThe ethereal layer is washed with water
  3. dry with materialdried over anhydrous sodium sulfate
  4. concentrationconcentrated
  5. customThe residue is chromatographed on a column of silica-gel, which
  6. washis eluted with 3% methanol-methylene chloride
  7. concentrationThe eluate is concentrated
  8. customthe residue is crystallized from ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-60d8f98c2e0c4fd5a3975558569587b4
Quelldatensatz
uspto-grants-1986_09
Patentnummer
US04612322

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