2-Aminopyrimidine → HCID 20144976、化合物

HRID 648577ノート

反応式

HRID 648577 の反応式
Br.[NH2:2][C:3]1[S:4][C:5]([C:9](=O)[CH2:10]Br)=[C:6]([CH3:8])[N:7]=1.[NH2:13][C:14]1[N:19]=[CH:18][CH:17]=[CH:16][N:15]=1.C(N(CC)CC)C>C(O)C>[NH2:2][C:3]1[S:4][C:5]([C:9]2[N:13]=[C:14]3[N:19]=[CH:18][CH:17]=[CH:16][N:15]3[CH:10]=2)=[C:6]([CH3:8])[N:7]=1

参加物

5

反応物 3

HCID 79782-AminopyrimidineHCID 8471TriethylamineHCID 20145033HCID 20145033、化合物

生成物 1

HCID 20144976HCID 20144976、化合物収率 15.2%

試薬・触媒・溶媒 1

HCID 702Ethanol溶媒

実験手順

A solution of 2-amino-4-methyl-5-(2-bromoacetyl)thiazole hydrobromide (7.2 g), 2-aminopyrimidine (3.8 g) and triethylamine (11 ml) in ethanol (200 ml) was refluxed for 8 hours and the reaction mixture was evaporated in vacuo. To the residue was added water and the resulting mixture was acidified to pH 1.0 with 10% hydrochloric acid. The acidified solution was treated with charcoal and filtered. The filtrate was adjusted to pH 7.0 with 20% aqueous potassium carbonate. The resulting precipitate was collected by filtration, washed successively with water and ethyl acetate, and recrystallized from aqueous ethanol to give 2-(2-amino-4-methyl-5-thiazolyl)imidazo[1,2-a]pyrimidine (0.8 g). mp 285°-286° C. (dec.).

後処理

  1. customthe reaction mixture was evaporated in vacuo
  2. additionTo the residue was added water
  3. additionThe acidified solution was treated with charcoal
  4. filtrationfiltered
  5. filtrationThe resulting precipitate was collected by filtration
  6. washwashed successively with water and ethyl acetate
  7. customrecrystallized from aqueous ethanol

出典と根拠

ORDレコード
ord-a8252c3de525453db558776aab892b79
出典データセット
uspto-grants-1988_04
特許番号
US04735957

反応ノート

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