Ethylamine → N-ethylthiophene-2-carboxamide

HRID 376700ノート

反応式

HRID 376700 の反応式
[S:1]1[CH:5]=[CH:4][CH:3]=[C:2]1[C:6](Cl)=[O:7].[CH2:9]([NH2:11])[CH3:10]>C(Cl)Cl.O>[CH2:9]([NH:11][C:6]([C:2]1[S:1][CH:5]=[CH:4][CH:3]=1)=[O:7])[CH3:10]

参加物

5

反応物 2

HCID 6341EthylamineHCID 789282-Thiophenecarbonyl chloride

生成物 1

HCID 5151566N-ethylthiophene-2-carboxamide収率 83.1%

試薬・触媒・溶媒 2

HCID 962Water溶媒2 回HCID 6344Dichloromethane溶媒

実験手順

A solution of 2-thiophenecarboxylic acid chloride (7.3 g, 50 mmol) in 30 mL CH2Cl2 was added to 70% ethylamine in water (11 g) at -5° C. and the resulting solution was stirred at RT for 18 h. After that, water was added. The organic layer was separated, washed with water, brine, dried and concentrated. Purification of the residue by flash chromatography with 25% ethyl acetate-hexane gave 6.4 g (83.1% yield) of N-ethyl-2-thiophenecarboxamide as a white solid, m.p. 75°-78° C.

後処理

  1. customThe organic layer was separated
  2. washwashed with water, brine
  3. customdried
  4. concentrationconcentrated
  5. customPurification of the residue by flash chromatography with 25% ethyl acetate-hexane

出典と根拠

ORDレコード
ord-0dc715d2977a4c42b14e0081279209c9
出典データセット
uspto-grants-2000_02
特許番号
USRE036562

反応ノート

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