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Carbamimidic acid, methyl ester, sulfate (1:1) → 1,4-Dihydro-2-methoxy-6-methyl-4-(3-nitrophenyl)-5-pyrimidinecarboxylic acid, 1-methyethyl ester

HRID 1722395
ノート
印刷プレビュー

反応式

HRID 1722395 の反応式
[N+:1]([C:4]1[CH:5]=[C:6]([CH:10]=[C:11]([C:18](=O)[CH3:19])[C:12]([O:14][CH:15]([CH3:17])[CH3:16])=[O:13])[CH:7]=[CH:8][CH:9]=1)([O-:3])=[O:2].C(=O)(O)[O-].[Na+].S(O)(O)(=O)=O.[CH3:31][O:32][C:33](=[NH:35])[NH2:34]>CN(C)C=O.O>[CH3:31][O:32][C:33]1[NH:35][C:18]([CH3:19])=[C:11]([C:12]([O:14][CH:15]([CH3:17])[CH3:16])=[O:13])[CH:10]([C:6]2[CH:7]=[CH:8][CH:9]=[C:4]([N+:1]([O-:3])=[O:2])[CH:5]=2)[N:34]=1
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

6

反応物 3

HCID 169039Carbamimidic acid, methyl ester, sulfate (1:1)HCID 516892Sodium BicarbonateHCID 3951175Butanoic acid, 2-[(3-nitrophenyl)methylene]-3-oxo-, 1-methylethyl ester

生成物 1

HCID 146271971,4-Dihydro-2-methoxy-6-methyl-4-(3-nitrophenyl)-5-pyrimidinecarboxylic acid, 1-methyethyl ester収率 67%

試薬・触媒・溶媒 2

HCID 962
Water
溶媒
HCID 6228Dimethylformamide溶媒

反応条件

温度
60 °C

実験手順

A reaction mixture containing 2-[(3-nitrophenyl)methylene]-3-oxobutanoic acid, 1-methylethyl ester (10.0 g, 36.0 mmol), sodium bicarbonate (8.40 g, 108 mmol), and O-methylpseudourea hydrogen sulfate (8.06 g, 46.8 mmol) in dimethylformamide (54 ml) was heated at 60° C. under argon for about 21/2 days. The reaction mixture was diluted with water and extracted with ethyl acetate. The organic phase was washed with water (six times) and saturated sodium chloride, dried (potassium carbonate) and evaporated. The residue was passed through a short pad of silica gel and crystallized from isopropyl ether/hexanes to give the title compound as yellow crystals (8.04 g).

後処理

  1. extractionextracted with ethyl acetate
  2. washThe organic phase was washed with water (six times) and saturated sodium chloride
  3. dry with materialdried (potassium carbonate)
  4. customevaporated
  5. customcrystallized from isopropyl ether/hexanes

出典と根拠

ORDレコード
ord-53903c6744d9425c970d98e8cb86d916
出典データセット
uspto-grants-1989_08
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US04855301

反応ノート

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