Water → 2-Naphthol

HRID 1249640

反応式

HRID 1249640 の反応式
[CH:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][C:2]=1S([O-])(=O)=O.[Na+].[OH-:16].[Na+].O>C(C1C(CC2C=CC=CC=2)=C(C)C=CC=1)C1C=CC=CC=1>[CH:1]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][C:2]=1[OH:16]

参加物

5

反応物 3

HCID 962WaterHCID 14798Sodium HydroxideHCID 23661868Sodium 2-naphthalenesulfonate

生成物 1

HCID 86632-Naphthol収率 92.5%

試薬・触媒・溶媒 1

HCID 3034397Methylbis(phenylmethyl)benzene溶媒

反応条件

温度
300 °C

実験手順

Sodium naphthalene-2-sulfonate (230 g) was suspended in 795 g of dibenzyltoluene, and 176 g of a 50% aqueous solution of sodium hydroxide was added. The mixture was stirred under a nitrogen stream and heated to 300° C. to dehydrate it. The dehydrated mixture was stirred at 310° C. for 3 hours. After cooling, 1.2 liters of water was added to the reaction mixture to separate the reaction medium layer. The aqueous layer was decolorized with activated carbon and then precipitated with an acid to give 133.2 g (yield 92.5%) of 2-naphthol.

後処理

  1. stirringThe dehydrated mixture was stirred at 310° C. for 3 hours
  2. temperatureAfter cooling
  3. customto separate the reaction medium layer
  4. customprecipitated with an acid

出典と根拠

ORDレコード
ord-a364fb2dd81c4501b9d18df5c1bee329
出典データセット
uspto-grants-1986_12
特許番号
US04633024

関連ノート

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