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2-Methoxy-1-phenylethanone → Ethyl 2-dimethylamino-5-methoxy-6-oxo-6-phenyl-2,4-hexadienoate

HRID 477330
ノート
印刷プレビュー

反応式

HRID 477330 の反応式
[C:1]1([C:7](=[O:22])[C:8](SC)=[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[B-](F)(F)F.CN(C)C([C:36](OCC)=[O:37])=CC=[N+](C)C.CC[O-].[Na+].COCC(C1C=CC=CC=1)=O>C(O)C>[CH3:18][N:17]([CH3:19])[C:11](=[CH:10][CH:9]=[C:8]([O:37][CH3:36])[C:7](=[O:22])[C:1]1[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1)[C:12]([O:14][CH2:15][CH3:16])=[O:13]
参加物実験手順後処理出典と根拠反応ノート

参加物

6

反応物 4

HCID 776982-Methoxy-1-phenylethanoneHCID 2723922Sodium ethoxideHCID 44325574Ethyl 6-phenyl-6-oxo-5-methylthio-2-dimethylamino2,4-hexadienoateHCID 86743575N-(dimethylamino-3-ethoxycarbonylpropenylidene)-N-methylmethanaminium tetrafluoroborate

生成物 1

HCID 53661101Ethyl 2-dimethylamino-5-methoxy-6-oxo-6-phenyl-2,4-hexadienoate

試薬・触媒・溶媒 1

HCID 702Ethanol溶媒

実験手順

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 (11.4 g), a 2M ethanolic solution of sodium ethylate (20 cc) and α-methoxyacetophenone (6 g) in ethanol (50 cc). After purification by chromatography on a silica column with a mixture of dicholoromethane and ethyl acetate (50:50 by volume) as eluent, ethyl 2-dimethylamino-5-methoxy-6-oxo-6-phenyl-2,4-hexadienoate (8.1 g) is obtained, and is used in the crude state in the subsequent syntheses.

後処理

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

出典と根拠

ORDレコード
ord-6e6464c9218943b8abb6cc76a80a7f64
出典データセット
uspto-grants-1989_12
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US04886835

反応ノート

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