p-Toluenesulfonic acid → HCID 20157034, Verbindung

HRID 986699Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 986699
[C:1]([C:4]1[CH:24]=[CH:23][C:7]([O:8][CH2:9][CH2:10][CH2:11][O:12][C:13]2[CH:21]=[CH:20][C:16]([C:17]([OH:19])=[O:18])=[CH:15][C:14]=2[Br:22])=[C:6]([CH2:25][CH2:26][CH3:27])[C:5]=1[OH:28])(=[O:3])[CH3:2].[O:29]1[CH:34]=[CH:33][CH2:32][CH2:31][CH2:30]1.C1(C)C=CC(S(O)(=O)=O)=CC=1>C(Cl)Cl>[C:1]([C:4]1[CH:24]=[CH:23][C:7]([O:8][CH2:9][CH2:10][CH2:11][O:12][C:13]2[CH:21]=[CH:20][C:16]([C:17]([O:19][CH:30]3[CH2:31][CH2:32][CH2:33][CH2:34][O:29]3)=[O:18])=[CH:15][C:14]=2[Br:22])=[C:6]([CH2:25][CH2:26][CH3:27])[C:5]=1[OH:28])(=[O:3])[CH3:2]

Komponenten

5

Edukt 3

HCID 6101p-Toluenesulfonic acidHCID 80803,4-dihydro-2H-pyranHCID 13338867HCID 13338867, Verbindung

Produkt 1

HCID 20157034HCID 20157034, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

In methylene chloride (30 ml) was dissolved 4-[3-(4-acetyl-3-hydroxy-2-propylphenoxy)propoxy]-3-bromobenzoic acid (1.35 g). To the solution were added dihydropyran (0.9 ml) and p-toluene sulfonic acid.monohydrate (5 mg). The mixture was stirred at room temperature for 30 minutes, to which was further added methylene chloride (30 ml). The resulting solution was washed with an aqueous solution of sodium hydrogen carbonate and then with water, followed by drying with sodium sulfate. The solvent was evaporated off, and the residue was purified by means of a silica-gel column chromatography (Developing solvent: chloroform) to give 1.4 g of tetrahydropyranyl 4-[3-(4-acetyl-3-hydroxy-2-propylphenoxy)propoxy]-3-bromobenzoate as colorless oily substance.

Aufarbeitung

  1. washThe resulting solution was washed with an aqueous solution of sodium hydrogen carbonate
  2. dry with materialby drying with sodium sulfate
  3. customThe solvent was evaporated off
  4. customthe residue was purified by means of a silica-gel column chromatography (Developing solvent: chloroform)

Quellen und Nachweise

ORD-Eintrag
ord-8c58465b37b6406998028a61b7e271bf
Quelldatensatz
uspto-grants-1987_12
Patentnummer
US04714774

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