Dichloromethane → 3-bromo-5-[(E)-C-[(2R)-2-(4-bromophenyl)-2-(2-methylphenyl)ethyl]-N-hydroxycarbonimidoyl]-1-methylpyridin-2-one

HRID 1617784ノート

反応式

HRID 1617784 の反応式
[Br:1][C:2]1[C:3](=[O:27])[N:4]([CH3:26])[CH:5]=[C:6]([C:8](=O)[CH2:9][C@H:10]([C:18]2[CH:23]=[CH:22][C:21]([Br:24])=[CH:20][CH:19]=2)[C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=2[CH3:17])[CH:7]=1.C(=O)(O)[O-].[Na+].Cl.[NH2:34][OH:35].ClCCl>C(O)C.O>[Br:1][C:2]1[C:3](=[O:27])[N:4]([CH3:26])[CH:5]=[C:6](/[C:8](=[N:34]/[OH:35])/[CH2:9][C@H:10]([C:18]2[CH:23]=[CH:22][C:21]([Br:24])=[CH:20][CH:19]=2)[C:11]2[CH:16]=[CH:15][CH:14]=[CH:13][C:12]=2[CH3:17])[CH:7]=1

参加物

7

反応物 4

HCID 6344DichloromethaneHCID 443297Hydroxyamine hydrochlorideHCID 516892Sodium BicarbonateHCID 67015677(R)-3-bromo-5-(3-(4-bromophenyl)-3-o-tolylpropanoyl)-1-methylpyridin-2(1H)-one

生成物 1

HCID 580433643-bromo-5-[(E)-C-[(2R)-2-(4-bromophenyl)-2-(2-methylphenyl)ethyl]-N-hydroxycarbonimidoyl]-1-methylpyridin-2-one

試薬・触媒・溶媒 2

HCID 702Ethanol溶媒HCID 962Water溶媒

反応条件

温度
100 °C

実験手順

To a suspension of (R)-3-bromo-5-(3-(4-bromophenyl)-3-o-tolylpropanoyl)-1-methylpyridin-2(1H)-one in ethanol (2.5 mL) and water (0.1 mL) were added sodium bicarbonate (30.9 mg) and hydroxylamine hydrochloride (32.0 mg) and the reaction mixture was stirred at reflux (100° C. oil bath temperature) for 2 hours. The reaction mixture was poured on water and dichloromethane and the layers were separated. The aqueous layer was extracted twice with dichloromethane. The combined organic layers were washed with brine, dried over magnesium sulfate, filtered, treated with silica gel and evaporated. The compound was purified by silica gel chromatography using a MPLC system (10 g silica gel column, CombiFlash Companion, Isco Inc.) eluting with a gradient of n-heptane/ethyl acetate (100:0 to 50:50) to give the title compound as a white solid, MS (ESI+): m/z=504.99 [M+H]+.

後処理

  1. customthe layers were separated
  2. extractionThe aqueous layer was extracted twice with dichloromethane
  3. washThe combined organic layers were washed with brine
  4. dry with materialdried over magnesium sulfate
  5. filtrationfiltered
  6. additiontreated with silica gel
  7. customevaporated
  8. customThe compound was purified by silica gel chromatography
  9. washeluting with a gradient of n-heptane/ethyl acetate (100:0 to 50:50)

出典と根拠

ORDレコード
ord-fe25111cb05e4354931e3a6f78d50c20
出典データセット
uspto-grants-2014_07
特許番号
US08765730B2

反応ノート

読み込み中…