Cyclohexanol → Cyclohexyl 1-(4-chlorophenyl)-1,4-dihydro-4-oxo-6-methylpyridazine-3-carboxylate

HRID 67263

Reaktionsgleichung

Reaktionsgleichung von HRID 67263
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:13]([CH3:14])=[CH:12][C:11](=[O:15])[C:10]([C:16]([OH:18])=[O:17])=[N:9]2)=[CH:4][CH:3]=1.C(N(CC)CC)C.ClC(O[CH:30]1[CH2:35][CH2:34][CH2:33][CH2:32][CH2:31]1)=O.C1(O)CCCCC1>C1(C)C=CC=CC=1.CCCCCC.O>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[C:13]([CH3:14])=[CH:12][C:11](=[O:15])[C:10]([C:16]([O:18][CH:30]3[CH2:35][CH2:34][CH2:33][CH2:32][CH2:31]3)=[O:17])=[N:9]2)=[CH:4][CH:3]=1

Komponenten

8

Edukt 4

HCID 7966CyclohexanolHCID 8471TriethylamineHCID 83262Carbonochloridic acid, cyclohexyl esterHCID 197225Fenridazon

Produkt 1

HCID 13084122Cyclohexyl 1-(4-chlorophenyl)-1,4-dihydro-4-oxo-6-methylpyridazine-3-carboxylateAusbeute 65 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 962WaterLösungsmittelHCID 1140TolueneLösungsmittel3×HCID 8058HexaneLösungsmittel

Versuchsvorschrift

To an ice cooled suspension of 5.29 g (0.02 mol) 1-(4-chlorophenyl)-1,4-dihydro-4-oxo-6-methyl pyridazine-3-carboxylic Acid (see Example 12) and 2.02 g (0.02 mol) of triethylamine in 75 ml of toluene there is added 3.25 g (0.02 mol) of cyclohexyl chloroformate. The suspension formed is stirred at room temperature for 15 minutes and to it there is added 3.2 g (0.022 mol) of cyclohexanol in 50 ml of toluene. The mixture is stirred at room temperature for 38 hrs. and to it there is added 100 ml of water. The mixture is stirred at room temperature for 1 hr. and the toluene layer is isolated and poured into 600 ml of hexane. The suspension formed is stirred at room temperature for 1/2 hr. and is vacuum filtered. The filter cake is air dried to afford 4.5 g (65% yield) of product, mp 160°-162° C.

Aufarbeitung

  1. customThe suspension formed
  2. stirringThe mixture is stirred at room temperature for 38 hrs
  3. stirringThe mixture is stirred at room temperature for 1 hr
  4. customThe suspension formed
  5. stirringis stirred at room temperature for 1/2 hr
  6. filtrationfiltered
  7. customdried

Quellen und Nachweise

ORD-Eintrag
ord-1ff062a96b93482eaad2b50dc2687f39
Quelldatensatz
uspto-grants-1982_08
Patentnummer
US04345934

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