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Sodium ethoxide → Ethyl 2-dimethylamino-6-(4-fluorophenyl)-5-methylthio-6-oxo-2,4-hexadienoate

HRID 477342
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HRID 477342 반응식
[C:1]1([C:7](=[O:22])[C:8]([S:20][CH3:21])=[CH:9][CH:10]=[C:11]([N:17]([CH3:19])[CH3:18])[C:12]([O:14][CH2:15][CH3:16])=[O:13])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[F:23][B-](F)(F)F.CN(C)C(C(OCC)=O)=CC=[N+](C)C.CC[O-].[Na+]>C(O)C>[CH3:19][N:17]([CH3:18])[C:11](=[CH:10][CH:9]=[C:8]([S:20][CH3:21])[C:7]([C:1]1[CH:2]=[CH:3][C:4]([F:23])=[CH:5][CH:6]=1)=[O:22])[C:12]([O:14][CH2:15][CH3:16])=[O:13]
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참가 물질

5

반응물 3

HCID 2723922Sodium ethoxideHCID 44325574Ethyl 6-phenyl-6-oxo-5-methylthio-2-dimethylamino2,4-hexadienoateHCID 86743575N-(dimethylamino-3-ethoxycarbonylpropenylidene)-N-methylmethanaminium tetrafluoroborate

생성물 1

HCID 54043061Ethyl 2-dimethylamino-6-(4-fluorophenyl)-5-methylthio-6-oxo-2,4-hexadienoate

시약·촉매·용매 1

HCID 702Ethanol
용매

실험 절차

The procedure is as in Example 4 for the preparation of ethyl 6-phenyl-6-oxo-5-methylthio-2-dimethylamino2,4-hexadienoate, starting with N-(3-dimethylamino-3-ethoxycarbonylpropenylidene)-N-methylmethanaminium tetrafluoroborate (10 g), a 2M ethanolic solution of sodium ethylate (21 cc) and α-methylthio-4-fluoroacetophenone (6.5 g) in ethanol (100 cc). After purification by chromatography on a silica column with a mixture of cyclohexane and ethyl acetate (50:50 by volume) as eluent, ethyl 2-dimethylamino-6-(4-fluorophenyl)-5-methylthio-6-oxo-2,4-hexadienoate (9 g) is obtained in the form of an orange-coloured oil, and is used in the crude state in the subsequent syntheses.

후처리

  1. customAfter purification by chromatography on a silica column
  2. additionwith a mixture of cyclohexane and ethyl acetate (50:50 by volume) as eluent

출처 및 근거

ORD 기록
ord-f6dca8f837264db9a512adcdaae5b5a9
출처 데이터셋
uspto-grants-1989_12
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US04886835

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