Methanol → 1,6-Dihydro-5(4H)-pyrimidinone O-(1-methylethyl)oxime monohydrochloride

HRID 129817

反応式

HRID 129817 の反応式
O.[ClH:2].Cl.[NH2:4][CH2:5][C:6]([CH2:8][NH2:9])=O.Cl.[CH3:11][CH:12]([O:14][NH2:15])[CH3:13].[CH3:16]O>>[ClH:2].[CH3:11][CH:12]([O:14][N:15]=[C:6]1[CH2:8][NH:9][CH:16]=[N:4][CH2:5]1)[CH3:13]

参加物

4

反応物 3

HCID 887MethanolHCID 12696235O-(propan-2-yl)hydroxylamine hydrochlorideHCID 190837391,3-Diaminopropan-2-one--hydrogen chloride--water (1/2/1)

生成物 1

HCID 736056031,6-Dihydro-5(4H)-pyrimidinone O-(1-methylethyl)oxime monohydrochloride収率 47%

実験手順

1,3-Diaminoacetone dihydrochloride monohydrate (2.0 g, 11.2 mmol) was dissolved in refluxing methanol and O-(1-methylethyl)hydroxylamine hydrochloride (2.5 g, 22.4 mmol) was added. After refluxing for 48 hours the solvent was evaporated. The crude product was dissolved in methanol and an excess of trimethylorthoformate was added to the reaction mixture which was heated to reflux. After 24 hours the solvent was removed in Vacuo. Crystallization from methanol/ethyl acetate afforded 1.00 g (47%) light-brown material. Mp. 170.0° C.

後処理

  1. additionwas added
  2. temperatureAfter refluxing for 48 hours the solvent
  3. customwas evaporated
  4. dissolutionThe crude product was dissolved in methanol
  5. additionan excess of trimethylorthoformate was added to the reaction mixture which
  6. temperaturewas heated to reflux
  7. customAfter 24 hours the solvent was removed in Vacuo
  8. customCrystallization from methanol/ethyl acetate

出典と根拠

ORDレコード
ord-cb0d69c88875414e84b49d71fd746930
出典データセット
uspto-grants-1995_11
特許番号
US05470856

関連ノート

読み込み中…