3-Isopropylphenol → 4-Chloro-3-isopropylphenol

HRID 38334ノート

反応式

HRID 38334 の反応式
[CH:1]([C:4]1[CH:5]=[C:6]([OH:10])[CH:7]=[CH:8][CH:9]=1)([CH3:3])[CH3:2].C(O[Cl:16])(C)(C)C>C1C=CC=CC=1.C(Cl)(Cl)Cl>[Cl:16][C:7]1[CH:8]=[CH:9][C:4]([CH:1]([CH3:3])[CH3:2])=[CH:5][C:6]=1[OH:10].[Cl:16][C:9]1[CH:8]=[CH:7][C:6]([OH:10])=[CH:5][C:4]=1[CH:1]([CH3:3])[CH3:2]

参加物

5

反応物 2

HCID 120593-IsopropylphenolHCID 521297Tert-Butyl hypochlorite

生成物 2

HCID 183278444-Chloro-3-isopropylphenol収率 104.4%HCID 595964872-Chloro-5-isopropylphenol

試薬・触媒・溶媒 1

HCID 22101329Benzene--trichloromethane (1/1)溶媒

実験手順

A solution of 3-isopropyl phenol (10.0 g, 73.4 mmol) in 350 mL 9:1 benzene/CHCl3 was cooled to 0° C. Hypochlorous acid tert-butyl ester (8.77 g, 80.8 mmol) was added drop-wise over 5 min and the mixture was allowed to warm to rt. After 16 h the mixture was concentrated in vacuo to give a crude oil. Purification via flash chromatography afforded 2-chloro-5-isopropyl-phenol and 4-chloro-3-isopropyl-phenol (6.540 g, 52%) as a 7:3 inseparable mixture of isomers in the form of a pale yellow oil. The combined regioisomers were used together in the following step.

後処理

  1. concentrationAfter 16 h the mixture was concentrated in vacuo
  2. customto give a crude oil
  3. customPurification via flash chromatography

出典と根拠

ORDレコード
ord-14cf3966710b48bca987a8cc9aa6700c
出典データセット
uspto-grants-2013_09
特許番号
US08524725B2

反応ノート

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