Hydrochloric Acid → [4-(1,3-Benzoxazol-2-yl)phenyl](2-hydroxy-4-methoxyphenyl)methanone

HRID 1288413Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1288413
[O:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[C:10]1[CH:18]=[CH:17][C:13]([C:14](Cl)=[O:15])=[CH:12][CH:11]=1.[Cl-].[Al+3].[Cl-].[Cl-].[CH3:23][O:24][C:25]1[CH:26]=[C:27]([OH:31])[CH:28]=[CH:29][CH:30]=1.ClC(Cl)C.Cl>ClCCCl>[O:1]1[C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N:3]=[C:2]1[C:10]1[CH:18]=[CH:17][C:13]([C:14]([C:28]2[CH:29]=[CH:30][C:25]([O:24][CH3:23])=[CH:26][C:27]=2[OH:31])=[O:15])=[CH:12][CH:11]=1

Komponenten

7

Edukt 5

HCID 313Hydrochloric AcidHCID 63651,1-DichloroethaneHCID 90073-MethoxyphenolHCID 6451240Aluminum(III) ChlorideHCID 20556623HCID 20556623, Verbindung

Produkt 1

HCID 21501898[4-(1,3-Benzoxazol-2-yl)phenyl](2-hydroxy-4-methoxyphenyl)methanoneAusbeute 61 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 111,2-DichloroethaneLösungsmittel

Reaktionsbedingungen

Temperatur
10 °C

Versuchsvorschrift

To a stirred solution of 12.8 g. (0.05 mole) of 4-(2-benzoxazolyl)benzoyl chloride in 200 ml. of 1,2-dichloroethane is added, in small increments, 14.8 g. (0.11 mole) of anhydrous alumimum chloride at room temperature. The resulting solution is cooled to 10° C. and a solution of 6.2 g. (0.05 mole) of m-methoxyphenol in 50 ml. of dichloroethane is added dropwise over a period of 10 min. The reaction mixture is stirred at 10° C. for 30 min., then allowed to warm to room temperature and stirred at reflux for 1 hr. The reaction mixture is cooled to room temperature and combined with 300 g. cracked ice containing 50 ml. of concentrated hydrochloric acid. The organic layer is separated and washed 2 times with warm water. The organic layer is filtered through filter-cel and the solvent is evaporated on a steam bath leaving a yellow solid residue. The crude solid product is recrystallized from toluene to give 10 g. yellow crystals, m.p. 177°-179° C. (61% yield). The structure and purity of the product are confirmed by IR, NMR, and elemental analysis.

Aufarbeitung

  1. customat room temperature
  2. temperatureto warm to room temperature
  3. stirringstirred
  4. temperatureat reflux for 1 hr
  5. temperatureThe reaction mixture is cooled to room temperature
  6. customThe organic layer is separated
  7. washwashed 2 times with warm water
  8. filtrationThe organic layer is filtered
  9. filtrationthrough filter-cel
  10. customthe solvent is evaporated on a steam bath
  11. customleaving a yellow solid residue
  12. customThe crude solid product is recrystallized from toluene
  13. customto give 10 g

Quellen und Nachweise

ORD-Eintrag
ord-d27c7cf4f3bc4f81be949ddaf6f05fa7
Quelldatensatz
uspto-grants-1976_10
Patentnummer
US03988295

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