N-bromobutanimide → 3-Bromo-7-(4-methylbenzyl)-1-benzothiophene

HRID 909814ノート

反応式

HRID 909814 の反応式
[CH3:1][C:2]1[CH:17]=[CH:16][C:5]([CH2:6][C:7]2[C:15]3[S:14][CH:13]=[CH:12][C:11]=3[CH:10]=[CH:9][CH:8]=2)=[CH:4][CH:3]=1.[Br:18]N1C(=O)CCC1=O>C(#N)C>[Br:18][C:12]1[C:11]2[CH:10]=[CH:9][CH:8]=[C:7]([CH2:6][C:5]3[CH:4]=[CH:3][C:2]([CH3:1])=[CH:17][CH:16]=3)[C:15]=2[S:14][CH:13]=1

参加物

4

反応物 2

HCID 67184N-bromobutanimideHCID 670691007-(4-Methylbenzyl)benzo[b]thiophene

生成物 1

HCID 670690913-Bromo-7-(4-methylbenzyl)-1-benzothiophene収率 56%

試薬・触媒・溶媒 1

HCID 6342Acetonitrile溶媒

実験手順

An acetonitrile (30 mL) solution of 7-(4-methylbenzyl)-1-benzothiophene (1.24 g, 5.20 mmol) was added with N-bromosuccinimide (1.01 g, 5.72 mmol) and stirred at room temperature for two hours. The solvent was evaporated under reduced pressure and diluted with ethyl acetate. After washed with 20 wt % sodium thiosulfate aqueous solution and brine, the organic phase was dried with anhydrous magnesium sulfate. After the desiccant was filtered off, the residue obtained by evaporating the solvent under reduced pressure was purified by silica gel column chromatography (hexane:ethyl acetate=100:1-50:1) to obtain a colorless powdered title compound (0.92 g, 56%).

後処理

  1. customThe solvent was evaporated under reduced pressure
  2. additiondiluted with ethyl acetate
  3. washAfter washed with 20 wt % sodium thiosulfate aqueous solution and brine
  4. dry with materialthe organic phase was dried with anhydrous magnesium sulfate
  5. filtrationAfter the desiccant was filtered off
  6. customthe residue obtained
  7. customby evaporating the solvent under reduced pressure
  8. customwas purified by silica gel column chromatography (hexane:ethyl acetate=100:1-50:1)

出典と根拠

ORDレコード
ord-c843dfb426f6449ca4d7e941f4cfb55c
出典データセット
uspto-grants-2011_09
特許番号
US08017792B2

反応ノート

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