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

HRID 981186
ノート
印刷プレビュー

反応式

HRID 981186 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

実験手順

16 g of ethylamine are added, in the course of 5 minutes, at between 10° and 15° C., to a stirred suspension of 13.5 g of ethyl 2-(2,7-dichloro-6-fluoroquinoline-3-carbonyl)-3-dimethylaminoacrylate in 135 cm3 of ethanol, the temperature is allowed to rise to about 20° C., 0.5 g of DBU is added and the mixture is heated, with stirring, for 2 hours at a temperature close to 75° C. After cooling to a temperature close to 20° C., the precipitate is drained and washed with twice 100 cm3 of ethanol and twice 100 cm3 of diethyl ether. 10.4 g of 8-chloro-3-ethoxycarbonyl-1-ethyl-7-fluoro-4-oxo-1,4-dihydro-benzo[b][1,8]naphthyridine are obtained in the form of a yellow solid melting at 300°-301° C., which is used for the subsequent steps without further purification.

後処理

  1. customto rise to about 20° C.
  2. temperaturethe mixture is heated
  3. customclose to 75° C
  4. temperatureAfter cooling to a temperature
  5. customclose to 20° C.
  6. washwashed with twice 100 cm3 of ethanol and twice 100 cm3 of diethyl ether

出典と根拠

ORDレコード
ord-71c7f30fa9284a88868b701dfda0c9f2
出典データセット
uspto-grants-1991_02
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US04990515

反応ノート

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