Benzyl Chloride → 5-Fluoro-2-methyl-1-(p-methylthiobenzyl)-indene

HRID 267830

反応式

HRID 267830 の反応式
[Mg].[CH3:2][S:3][C:4]1[CH:12]=[CH:11][C:7]([CH2:8][Mg]Cl)=[CH:6][CH:5]=1.CSC1C=CC(CCl)=CC=1.C(Cl)C1C=CC=CC=1.[F:31][C:32]1[CH:33]=[C:34]2[C:38](=[CH:39][CH:40]=1)[C:37](=O)[CH:36]([CH3:42])[CH2:35]2>CCOCC.C1(C)C=CC=CC=1>[F:31][C:32]1[CH:33]=[C:34]2[C:38](=[CH:39][CH:40]=1)[CH:37]([CH2:8][C:7]1[CH:11]=[CH:12][C:4]([S:3][CH3:2])=[CH:5][CH:6]=1)[C:36]([CH3:42])=[CH:35]2

参加物

8

反応物 5

HCID 7503Benzyl ChlorideHCID 701281-(Chloromethyl)-4-(methylthio)benzeneHCID 30162575-Fluoro-2-methylindan-1-oneHCID 5462224MagnesiumHCID 178503173HCID 178503173、化合物

生成物 1

HCID 215218885-Fluoro-2-methyl-1-(p-methylthiobenzyl)-indene

試薬・触媒・溶媒 2

HCID 1140Toluene溶媒HCID 3283Diethyl Ether溶媒2 回

反応条件

温度
30 °C

実験手順

Twenty-five grams (1.04 moles) of magnesium turnings were placed in a dried flask under N2 with 400 ml. of ether. Ten ml. of 0.05 molar p-methylthiobenzyl magnesium chloride in ether is added and the mixture is warmed to 30°C. About 2-3% of 39.7 g. (0.23 moles) of p-methylthiobenzyl chloride in 75 ml. of toluene is added. After 3-5 minutes of stirring an exotherm to 32°-33°C occurs signifying initiation of the reaction. After aging for 5 minutes, the rest of the benzyl chloride is added dropwise over 90 minutes. The reaction is aged for 30 minutes with stirring. 5-Fluoro-2-methyl-1-indanone (32.6 g., 0.199 mole) is added dropwise over 45 minutes. After aging for 30 minutes, the milky supernatant mixture is decanted from the magnesium. The flask and residual magnesium are rinsed with toluene. The reaction is then quenched by the addition of 120 ml. of 3N sulfuric acid. The lower layer is discarded. To the organic layer is added 80 ml. of 1:10 concentrated sulfuric acid, acetic acid and the two-phase mixture, stirred vigorously for one hour and water (100 ml.) is added. The bottom layer is discarded and the organic layer is washed with 100 ml. of water and 200 ml. of 2N sodium hydroxide. After a final water wash the organic layer is concentrated to give 5-fluoro-2-methyl-1-(p-methylthiobenzyl)-indene. Similarly, when p-methylsulfinylbenzyl chloride is used in place of p-methylthiobenzyl chloride in the above example, the corresponding p-methylsulfinylbenzyl indene is obtained.

後処理

  1. custominitiation of the reaction
  2. waitAfter aging for 5 minutes
  3. waitThe reaction is aged for 30 minutes
  4. stirringwith stirring
  5. waitAfter aging for 30 minutes
  6. customthe milky supernatant mixture is decanted from the magnesium
  7. washThe flask and residual magnesium are rinsed with toluene
  8. customThe reaction is then quenched by the addition of 120 ml
  9. additionTo the organic layer is added 80 ml
  10. stirringof 1:10 concentrated sulfuric acid, acetic acid and the two-phase mixture, stirred vigorously for one hour
  11. additionwater (100 ml.) is added
  12. washthe organic layer is washed with 100 ml
  13. washAfter a final water wash the organic layer
  14. concentrationis concentrated

出典と根拠

ORDレコード
ord-1cd81c4e6f434da0bdd8574773ca4590
出典データセット
uspto-grants-1976_03
特許番号
US03944600

関連ノート

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