Synthetic method for preparing 2-acyl 4-allcyl phenol

A technology for the synthesis of alkylphenols and synthesis methods, which is applied in the field of synthesis of 2-acyl-4-alkylphenols, an important precursor of metal extractants, can solve problems such as unstable process routes, complicated operations, and high product purity, and avoid Difficulty in product purification, overcoming complex operation, and high yield
CN1821203AInactive Publication Date: 2006-08-23SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI
Publication Date
2006-08-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to the synthesis process of different kinds of 2-acyl-4-alkyl phenol, which is the important intermediate of metal extractant 5-alkyl-2-hydroxyalkyl benzopheonone oxime. Through a two-step reaction under relatively mild condition, the present invention can obtain the target product in high yield and high selectivity, and the solvent, the reaction produced halohydrocarbon and the catalyst aqua may be reused without exhaust. The synthesis process has industrial production foreground obviously.
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Description

technical field

[0001] The invention belongs to the field of chemical materials and relates to a synthesis method for preparing 2-acyl-4-alkylphenol, an important precursor of a metal extractant. Background technique

[0002] 2-acyl-4-alkylphenol (I) is an important intermediate of metal extractant 5-alkyl-2-hydroxyalkylphenone oxime (II), which can be obtained by reacting with hydroxylamine to obtain 5-alkyl-2 -Hydroxyalkylphenone oxime (II). This type of ketoxime is widely used in the field of metal extraction. For example: 2-acetyl-4-nonylphenol is an important precursor of extractants for copper, nickel and other metal purification (see: U.S. Pat. No. 5,300,689; U.S. Pat. No. 5,969,185; U.S. Pat. No. 5,488,161; WO.95 / 01957; J. Prakt. Chem. 1989, 331(4), 617-630). Its structural formula is as follows:

[0003]

[0004] In U.S.Pat.No.5,300,689 describes a method for preparing 2-acyl-4-alkylphenols with Fries rearrangement, the method has low yield, high reaction tem...

Claims

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