Benzyl Alcohol → 2-Amino-4-benzyloxy-5-nitropyrimidine

HRID 380339ノート

反応式

HRID 380339 の反応式
[NH2:1][C:2]1[N:7]=[C:6](Cl)[C:5]([N+:9]([O-:11])=[O:10])=[CH:4][N:3]=1.[Na].[CH2:13]([OH:20])[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1>>[NH2:1][C:2]1[N:7]=[C:6]([O:20][CH2:13][C:14]2[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=2)[C:5]([N+:9]([O-:11])=[O:10])=[CH:4][N:3]=1

参加物

4

反応物 3

HCID 244Benzyl AlcoholHCID 3199954-chloro-5-nitropyrimidin-2-amineHCID 5360545Sodium

生成物 1

HCID 102639222-Amino-4-benzyloxy-5-nitropyrimidine

反応条件

温度
130 °C

実験手順

2-Amino-4-chloro-5-nitropyrimidine (0.70 g, 4.0 mmol) was added to a solution of sodium (0.12 g, 5.2 mmol) in benzyl alcohol (8 mL) under argon. The solution was heated in a 130° C. oil bath for 3 h, and approximately half of the benzyl alcohol was evaporated under reduced pressure. The residue was poured into water (50 mL) with constant stirring for 10 min. After neutralization with glacial acetic acid, a brown precipitate formed which was collected by filtration and washed with water. This solid was crystallized from benzene to give 5a as a golden crystalline solid: yield, 126 mg (13%); mp 164-167° C.; UV (pH 1) λmax 262 nm (ε=0.879×104), 295 (sh) (0.571×104); (pH 6.9) 235 (sh) (0.448×104), 273 (0.360×104), 326 (1.085×104); (pH 13) 273 (0.404×104), 327 (1.055×104); 1H NMR δ 5.51 (s, 2 H, ArCH2), 7.35-7.54 (m, 5 H, ArH), 8.05 (d, 2 H, NH2, exchange with D2O), 8.92 (s, 1 H, H-6); MS (EI) calcd. m/z for C11H10 N4O3 246.0752, found 246.0758; Anal. (C11H10N4O3) C, H, N.

後処理

  1. customapproximately half of the benzyl alcohol was evaporated under reduced pressure
  2. additionThe residue was poured into water (50 mL)
  3. customAfter neutralization with glacial acetic acid, a brown precipitate formed which
  4. filtrationwas collected by filtration
  5. washwashed with water
  6. customThis solid was crystallized from benzene

出典と根拠

ORDレコード
ord-380d49c5623e4ea186235c1188191c26
出典データセット
uspto-grants-2001_10
特許番号
US06303604B1

反応ノート

読み込み中…