Diethyl Ether → HCID 20375614, 화합물

HRID 1833378노트

반응식

HRID 1833378 반응식
[H-].[Na+].[Cl:3][C:4]1[CH:22]=[CH:21][C:7]([CH2:8][N:9]2[C:18]3[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=3)[C:12]([CH3:19])=[CH:11][C:10]2=[O:20])=[CH:6][CH:5]=1.[C:23](OCC)(=[O:29])[C:24]([O:26][CH2:27][CH3:28])=[O:25].CCOCC>CN(C)C=O>[Cl:3][C:4]1[CH:5]=[CH:6][C:7]([CH2:8][N:9]2[C:18]3[C:13](=[CH:14][CH:15]=[CH:16][CH:17]=3)[C:12]([CH2:19][C:23](=[O:29])[C:24]([O:26][CH2:27][CH3:28])=[O:25])=[CH:11][C:10]2=[O:20])=[CH:21][CH:22]=1

참가 물질

6

반응물 4

HCID 3283Diethyl EtherHCID 7268Diethyl OxalateHCID 24758Sodium hydrideHCID 12114996N-350S

생성물 1

HCID 20375614HCID 20375614, 화합물

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

실험 절차

Sodium hydride (18g.; 60% w/w dispersion in oil, washed as described in Example 1) was stirred in dry dimethylformamide (300 ml.), and 1-(4-chlorobenzyl)-1,2-dihydro-4-methyl-2-oxoquinoline (64.7 g.) was added, followed by diethyl oxalate (55 g.). The mixture was stirred at room temperature for 2.5 hours with occasional external cooling to keep the temperature below 25° C. Ether (2 1.) was added, and the mixture was filtered. The solid residue was washed with ether (500 ml.), and then suspended in dimethylformamide (200ml.) nd acidified to pH 2 by the addition of concentrated hydrochloric acid. The resultant mixture was added to water (3 1.), and the mixture filtered, and the solid residue washed with water (2 1.), drained well, and crystallised from ethanol to give ethyl 1-(4-chlorobenzyl)-1,2-dihydro-2-oxoquinol-4-ylpyruvate, m.p. 180°-182° C.

후처리

  1. temperatureexternal cooling
  2. customthe temperature below 25° C
  3. filtrationthe mixture was filtered
  4. washThe solid residue was washed with ether (500 ml.)
  5. additionacidified to pH 2 by the addition of concentrated hydrochloric acid
  6. additionThe resultant mixture was added to water (3 1.)
  7. filtrationthe mixture filtered
  8. washthe solid residue washed with water (2 1.)
  9. customcrystallised from ethanol

출처 및 근거

ORD 기록
ord-0d60a1a47a774717afb8b3523580848f
출처 데이터셋
uspto-grants-1978_01
특허 번호
US04066651

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