Phosphorus oxychloride → 3-benzyl-6-chloro-5-isopropylpyrimidine-2,4(1H,3H)-dione

HRID 357122

Reaktionsgleichung

Reaktionsgleichung von HRID 357122
P(Cl)(Cl)([Cl:3])=O.[CH2:6]([N:13]1[C:18](=[O:19])[CH:17]([CH:20]([CH3:22])[CH3:21])[C:16](=O)[NH:15][C:14]1=[O:24])[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1>C(O)C>[CH2:6]([N:13]1[C:18](=[O:19])[C:17]([CH:20]([CH3:22])[CH3:21])=[C:16]([Cl:3])[NH:15][C:14]1=[O:24])[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1

Komponenten

4

Edukt 2

HCID 24813Phosphorus oxychlorideHCID 189367373-benzyl-5-isopropylpyrimidine-2,4,6(1H,3H)-trione

Produkt 1

HCID 189367443-benzyl-6-chloro-5-isopropylpyrimidine-2,4(1H,3H)-dione

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Versuchsvorschrift

To 16.8 ml of 50% ethanol, 78.7 ml (844 mmol) of phosphorus oxychloride was added drop by drop, with stirring under ice cooling conditions. To this solution, 26.03 g (100 mmol) of 3-benzyl-5-isopropylpyrimidine-2,4,6(1H,3H)-trione was added little by little. This mixture was stirred at 50° C. for 30 minutes and then at 100° C. for 90 minutes. After cooling, the reaction mixture was poured into ice water and stirred for 1 hour. The resulting precipitate was collected by filtration, washed with water and n-hexane and dried to yield 27.05 g (97.0%, white crystal) of the desired product.

Aufarbeitung

  1. stirringThis mixture was stirred at 50° C. for 30 minutes
  2. temperatureAfter cooling
  3. stirringstirred for 1 hour
  4. filtrationThe resulting precipitate was collected by filtration
  5. washwashed with water and n-hexane
  6. customdried

Quellen und Nachweise

ORD-Eintrag
ord-a86168407b444ba19a2e313c68c7ca05
Quelldatensatz
uspto-grants-1998_11
Patentnummer
US05840732

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