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Ethylamine → 8-Chloro-3-ethoxycarbonyl-1-ethyl-7-fluoro-4-oxo-1,4-dihydro-benzo[b][1,8]naphthyridine

HRID 344856
ノート
印刷プレビュー

反応式

HRID 344856 の反応式
[CH2:1](N)C.Cl[C:5]1[C:14]([C:15]([C:17](=[CH:23][N:24](C)[CH3:25])[C:18]([O:20][CH2:21][CH3:22])=[O:19])=[O:16])=[CH:13][C:12]2[C:7](=[CH:8][C:9]([Cl:28])=[C:10]([F:27])[CH:11]=2)[N:6]=1.C1CCN2C(=NCCC2)CC1>C(O)C>[Cl:28][C:9]1[C:10]([F:27])=[CH:11][C:12]2[C:7]([CH:8]=1)=[N:6][C:5]1[N:24]([CH2:25][CH3:1])[CH:23]=[C:17]([C:18]([O:20][CH2:21][CH3:22])=[O:19])[C:15](=[O:16])[C:14]=1[CH:13]=2
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 6341EthylamineHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 54015905Ethyl 2-(2,7-dichloro-6-fluoroquinoline-3-carbonyl)-3-dimethylaminoacrylate

生成物 1

HCID 147005508-Chloro-3-ethoxycarbonyl-1-ethyl-7-fluoro-4-oxo-1,4-dihydro-benzo[b][1,8]naphthyridine収率 85.1%

試薬・触媒・溶媒 1

HCID 702Ethanol溶媒

反応条件

温度
75 °C

実験手順

Ethylamine (16 g) is added in the course of 5 minutes at between 10° and 15° C. to a stirred suspension of ethyl 2-(2,7-dichloro-6-fluoro-3-quinolinecarbonyl)-3-(dimethylamino)acrylate (13.5 g) in ethanol (135 cc), the temperature is allowed to rise to approximately 20° C., DBU (0.5 g) is added and the mixture is heated with stirring for 2 hours to a temperature in the region of 75° C. After cooling to a temperature in the region of 20° C., the precipitate is drained and washed with ethanol (2×100 cc) and ethyl ether (2×100 cc). 8-Chloro-3-ethoxycarbonyl-1-ethyl-7-fluoro-4-oxo-1,4-dihydrobenzo[b][1, 8]naphthyridine (10.4 g) is obtained in the form of a yellow solid, m.p. 300°-301° C., which is used without further purification for the subsequent steps.

後処理

  1. customto rise to approximately 20° C.
  2. temperaturethe mixture is heated
  3. temperatureAfter cooling to a temperature in the region of 20° C.
  4. washwashed with ethanol (2×100 cc) and ethyl ether (2×100 cc)

出典と根拠

ORDレコード
ord-57288882f2ba49acafa926d1cb4c08b8
出典データセット
uspto-grants-1991_10
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US05053509

反応ノート

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