Ethylamine → 6-(2-Nitro-1-propenyl)imidazo[1,2-a]pyridine

HRID 414332

反応式

HRID 414332 の反応式
[N:1]1[CH:2]=[CH:3][N:4]2[CH:9]=[C:8]([CH:10]=O)[CH:7]=[CH:6][C:5]=12.[N+:12]([CH2:15][CH3:16])([O-:14])=[O:13].C(N)C>C(O)C.C(N)CCC>[N+:12]([C:15]([CH3:16])=[CH:10][C:8]1[CH:7]=[CH:6][C:5]2[N:4]([CH:3]=[CH:2][N:1]=2)[CH:9]=1)([O-:14])=[O:13]

参加物

6

反応物 3

HCID 6341EthylamineHCID 6587NitroethaneHCID 7164582Imidazo[1,2-a]pyridine-6-carbaldehyde

生成物 1

HCID 539155686-(2-Nitro-1-propenyl)imidazo[1,2-a]pyridine収率 11.9%

試薬・触媒・溶媒 2

HCID 8007Butylamine触媒HCID 702Ethanol溶媒

実験手順

In 40 ml of ethanol, 6.9 g of 6-imidazo[1,2-a]pyridinecarbaldehyde was stirred under reflux for 14 hours, together with 10.6 g of nitroethane and 30 drops of n-butyl amine. Then, a small quantity of ethyl amine was added thereto and the mixture was stirred under reflux for further 18 hours. After insoluble matter was removed by filtration upon heating, 50 ml of ethanol and 150 ml of ether were further added to remove insoluble matter by filtration. The solvent was removed by distillation under reduced pressure and the residue was recrystallized twice from ethanol to obtain 1.14 g of 6-(2-nitro-1-propenyl)imidazo[1,2-a]pyridine.

後処理

  1. temperatureunder reflux for further 18 hours
  2. customAfter insoluble matter was removed by filtration
  3. temperatureupon heating
  4. addition50 ml of ethanol and 150 ml of ether were further added
  5. customto remove insoluble matter
  6. filtrationby filtration
  7. customThe solvent was removed by distillation under reduced pressure
  8. customthe residue was recrystallized twice from ethanol

出典と根拠

ORDレコード
ord-57882014ec2d410fa092ab3358781700
出典データセット
uspto-grants-1988_12
特許番号
US04791203

関連ノート

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