Hydrochloric Acid → 7-Ethyl-5-aminobenzothiazole

HRID 1275105

反応式

HRID 1275105 の反応式
Cl[Sn]Cl.Cl.[CH2:5]([C:7]1[C:15]2[S:14][CH:13]=[N:12][C:11]=2[CH:10]=[C:9]([N+:16]([O-])=O)[CH:8]=1)[CH3:6].[OH-].[Na+]>>[CH2:5]([C:7]1[C:15]2[S:14][CH:13]=[N:12][C:11]=2[CH:10]=[C:9]([NH2:16])[CH:8]=1)[CH3:6]

参加物

5

反応物 4

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 24479Stannous ChlorideHCID 227280367-Ethyl-5-nitro-1,3-benzothiazole

生成物 1

HCID 227280297-Ethyl-5-aminobenzothiazole収率 98.4%

反応条件

温度
25 °C

実験手順

To a solution of SnCl2 (1.5 g, 1.9 mmol) and 5.0 mL of HCl was added 7-ethyl-5-nitrobenzothiazole (0.12 g, 0.57 mmol) in a portion and resulting reaction mixture was stirred for 1 h at 25° C. The reaction mixture was basified with aqueous NaOH and extracted with EtOAc and CHCl3. Combined organic layers were dried over Na2SO4 and concentrated in vacuo, yielding an oil (0.10 g, >95%) which was identified as the desired amine (>95% pure) and subjected to a following reaction without further purification.

後処理

  1. customresulting
  2. customreaction mixture
  3. extractionextracted with EtOAc and CHCl3
  4. dry with materialCombined organic layers were dried over Na2SO4
  5. concentrationconcentrated in vacuo

出典と根拠

ORDレコード
ord-3a60b16e7f5c4f22948992603c542fef
出典データセット
uspto-grants-2000_12
特許番号
US06159998

関連ノート

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