Triethylamine → N-Methyl-N-(3-methyl-1,2,4-thiadiazol-5-yl)cyclohexanecarboxamide

HRID 972071Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 972071
[CH:1]1([C:7](Cl)=[O:8])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[CH3:10][NH:11][C:12]1[S:16][N:15]=[C:14]([CH3:17])[N:13]=1.C(N(CC)CC)C>C1C=CC=CC=1>[CH3:17][C:14]1[N:13]=[C:12]([N:11]([CH3:10])[C:7]([CH:1]2[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]2)=[O:8])[S:16][N:15]=1

Komponenten

5

Edukt 3

HCID 8471TriethylamineHCID 75938Cyclohexanecarbonyl chlorideHCID 12725101N,3-Dimethyl-1,2,4-thiadiazol-5-amine

Produkt 1

HCID 20393633N-Methyl-N-(3-methyl-1,2,4-thiadiazol-5-yl)cyclohexanecarboxamide

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 241BenzeneLösungsmittel

Versuchsvorschrift

Cyclohexane carboxylic acid chloride (9.92 g, 0.068 mol) was added slowly to a solution of 5-methylamino-3-methyl-1,2,4-thiadiazole (7.0 g, 0.054 mol) in dry benzene containing triethylamine (6.87 g, 0.068 mol) and the mixture heated under reflux for 11/2 hours, cooled and washed with 2N hydrochloric acid, saturated solution sodium hydrogen carbonate and water; dried over magnesium sulphate, filtered and evaporated down to yield yellow oil which crystallised upon standing. This was recrystallised twice from petroleum ether 60°-80° C. to yield off-white crystals of N-(3-methyl-1,2,4-thiadiazol-5-yl)-N-methylcyclohexane carboxamide. Yield 8.23 g, (63.8%), m.p. 96° C.

Aufarbeitung

  1. temperaturethe mixture heated
  2. temperatureunder reflux for 11/2 hours
  3. temperaturecooled
  4. washwashed with 2N hydrochloric acid, saturated solution sodium hydrogen carbonate and water
  5. dry with materialdried over magnesium sulphate
  6. filtrationfiltered
  7. customevaporated down
  8. customto yield yellow oil which
  9. customcrystallised
  10. customThis was recrystallised twice from petroleum ether 60°-80° C.

Quellen und Nachweise

ORD-Eintrag
ord-c4d57d57a342484db77c66b8bde9c4ec
Quelldatensatz
uspto-grants-1979_07
Patentnummer
US04163048

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