Potassium Carbonate → 7-Chloro-3-methyl-4-oxo-1-phenyl-1,4-dihydro-quinoline-2-carboxylic acid methyl ester

HRID 1261781ノート

反応式

HRID 1261781 の反応式
[CH3:1][O:2][C:3](=[O:24])[C:4]([N:6]([C:13]1[CH:18]=[C:17]([Cl:19])[CH:16]=[CH:15][C:14]=1[C:20](=[O:23])[CH2:21][CH3:22])[C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1)=O.C(=O)([O-])[O-].[K+].[K+]>CO>[CH3:1][O:2][C:3]([C:4]1[N:6]([C:7]2[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=2)[C:13]2[C:14]([C:20](=[O:23])[C:21]=1[CH3:22])=[CH:15][CH:16]=[C:17]([Cl:19])[CH:18]=2)=[O:24]

参加物

4

反応物 2

HCID 11430Potassium CarbonateHCID 70816656Methyl (n-(5-chloro-2-propionylphenyl)-N-phenylcarbamoyl)formate

生成物 1

HCID 708166537-Chloro-3-methyl-4-oxo-1-phenyl-1,4-dihydro-quinoline-2-carboxylic acid methyl ester収率 73.6%

試薬・触媒・溶媒 1

HCID 887Methanol溶媒

反応条件

温度
80 °C

実験手順

A stirred suspension of N-(5-chloro-2-propionyl-phenyl)-N-phenyl-oxalamic acid methyl ester (15.0 g, 43.5 mmol) in methanol (200 mL) was treated with potassium carbonate (35.0 g, 253 mmol) at 25° C. The mixture was then heated at 80° C. for 1 h. At this time, the reaction was cooled to 25° C. The resulting solids were collected by filtration through a sintered glass funnel and then washed with methanol (2×50 mL). The filtrate was concentrated in vacuo. The resulting residue was dissolved in ethyl acetate (500 mL) and was washed with water (2×200 mL). The organics were dried over sodium sulfate, filtered and concentrated in vacuo. The resulting solids were triturated with hexanes and diethyl ether to afford 7-chloro-3-methyl-4-oxo-1-phenyl-1,4-dihydro-quinoline-2-carboxylic acid methyl ester (10.5 g, 73.4%). 1H NMR (DMSO-d6) δ ppm 8.24 (d, J=8.7 Hz, 1H), 7.28-7.78 (m, 6H), 6.69 (d, J=1.7 Hz, 1H), 3.49 (s, 3H), 1.97 (s, 3H); MS m/e calcd for C18H14ClNO3 [(M+H)+] 328.0. Found 327.9.

後処理

  1. temperatureAt this time, the reaction was cooled to 25° C
  2. filtrationThe resulting solids were collected by filtration through a sintered glass funnel
  3. washwashed with methanol (2×50 mL)
  4. concentrationThe filtrate was concentrated in vacuo
  5. dissolutionThe resulting residue was dissolved in ethyl acetate (500 mL)
  6. washwas washed with water (2×200 mL)
  7. dry with materialThe organics were dried over sodium sulfate
  8. filtrationfiltered
  9. concentrationconcentrated in vacuo
  10. customThe resulting solids were triturated with hexanes and diethyl ether

出典と根拠

ORDレコード
ord-c96bfd5657de400d9773daf639a9c546
出典データセット
uspto-grants-2013_06
特許番号
US08471027B2

反応ノート

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