Sodium hydride → Ethyl 7-(1-t-butoxycarbonyl-3-pyrrolidinyloxy)-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylate

HRID 465375ノート

反応式

HRID 465375 の反応式
[CH:1]1([N:4]2[C:13]3[C:8](=[CH:9][C:10]([F:16])=[C:11](F)[C:12]=3[F:14])[C:7](=[O:17])[C:6]([C:18]([O:20][CH2:21][CH3:22])=[O:19])=[CH:5]2)[CH2:3][CH2:2]1.[C:23]([O:27][C:28]([N:30]1[CH2:34][CH2:33][CH:32]([OH:35])[CH2:31]1)=[O:29])([CH3:26])([CH3:25])[CH3:24].C1CCN2C(=NCCC2)CC1.[H-].[Na+]>CN(C=O)C>[C:23]([O:27][C:28]([N:30]1[CH2:34][CH2:33][CH:32]([O:35][C:11]2[C:12]([F:14])=[C:13]3[C:8]([C:7](=[O:17])[C:6]([C:18]([O:20][CH2:21][CH3:22])=[O:19])=[CH:5][N:4]3[CH:1]3[CH2:2][CH2:3]3)=[CH:9][C:10]=2[F:16])[CH2:31]1)=[O:29])([CH3:26])([CH3:24])[CH3:25]

参加物

6

反応物 4

HCID 24758Sodium hydrideHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 5354151-Cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxo-3-quinolinecarboxylic Acid Ethyl EsterHCID 44169391-Boc-3-pyrrolidinol

生成物 1

HCID 15021538Ethyl 7-(1-t-butoxycarbonyl-3-pyrrolidinyloxy)-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylate収率 58.6%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

To a mixture of 233 mg of ethyl 1-cyclopropyl-6,7,8-trifluoro-1,4-dihydro-4-oxoquinoline-3-carboxylate, 168 mg of 1-t-butoxycarbonyl-3-hydroxypyrrolidine, 170 mg of DBU and 5 xl of DMF was added 36 mg of 55% sodium hydride while the former was stirred at room temperature. After the resultant mixture was stirred for 1 hour at room temperature, the reaction mixture was concentrated to dryness under reduced pressure. After chloroform and 10% citric acid were added to the residue and the resultant mixture was shaken thoroughly, the resulting chloroform layer was collected and then successively washed with a 5% aqueous solution of sodium hydrogencarbonate and saturated saline. The chloroform solution was dried over anhydrous sodium sulfate and then concentrated. The residue was purified by chromatography on silica gel (chloroform/methanol: 100:1), whereby 210 mg of ethyl 7-(1-t-butoxycarbonyl-3-pyrrolidinyloxy)-1-cyclopropyl-6,8-difluoro-1,4-dihydro-4-oxoquinoline-3-carboxylate was obtained.

後処理

  1. concentrationthe reaction mixture was concentrated to dryness under reduced pressure
  2. additionAfter chloroform and 10% citric acid were added to the residue
  3. stirringthe resultant mixture was shaken thoroughly
  4. customthe resulting chloroform layer was collected
  5. washsuccessively washed with a 5% aqueous solution of sodium hydrogencarbonate and saturated saline
  6. dry with materialThe chloroform solution was dried over anhydrous sodium sulfate
  7. concentrationconcentrated
  8. customThe residue was purified by chromatography on silica gel (chloroform/methanol: 100:1)

出典と根拠

ORDレコード
ord-924f6b530c634bd3a526df38747d78fe
出典データセット
uspto-grants-1992_10
特許番号
US05153203

反応ノート

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