Method for preparing 2,6-dimethyl-2-heptanol

A technology of dimethyl and heptanol, applied in 2 fields, can solve problems such as difficult to guarantee product yield and operation safety, unobvious triggering, long triggering time, etc., and achieve high product yield, fast triggering speed and easy storage Effect
CN100516010CActive Publication Date: 2009-07-22格林生物科技股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
格林生物科技股份有限公司
Publication Date
2009-07-22

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Abstract

The invention discloses a method for preparing organic matter in the technical field of chemical industry, in particular a method for preparing 2,6-dimethyl-2-heptanol. The present invention uses benzylmagnesium chloride or benzylmagnesium bromide as an initiator to prepare methyl Grignard reagent, then carries out Grignard reaction with 2-methyl-2-hepten-6-one, and then catalyzes hydrogenation to synthesize 2 , 6-Dimethyl-2-heptanol. The initiator prepared in the present invention is relatively stable in properties and easy to store. Compared with commonly used initiators, it has the characteristics of fast initiation speed, strong versatility, small dosage, convenient storage, and low toxicity, and is especially suitable for large-scale production. Preparation of Reagent's Reagent. The preparation of the product of the present invention has more safety and higher product yield. The product of the invention can be widely used in the formula of daily chemical essence.
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Description

technical field

[0001] The invention belongs to the technical field of chemical industry and relates to a preparation method of 2,6-dimethyl-2-heptanol. technical background

[0002] 2,6-Dimethyl-2-heptanol (2,6-Dimethyl-2-heptanol) has fresh lily-of-the-valley and citrus notes, and can be used in daily chemical fragrance formulas.

[0003] The main methods for preparing 2,6-dimethyl-2-heptanol are 6-methyl-5-hepten-2-one and methylmagnesium chloride or methylmagnesium bromide or methylmagnesium iodide. Based Grignard reagent reaction, and catalytic hydrogenation; or use 2-methyl-6-heptanone as raw material for Grignard reaction.

[0004]

[0005] Halogenated hydrocarbon reacts with metal magnesium in anhydrous ether or tetrahydrofuran to generate alkylmagnesium halide RMgX. This organic magnesium compound is called Grignard Reagent. Grignard reagents can undergo addition reactions with compounds such as aldehydes and ketones, and generate alcohols after hydrolysis. Thi...

Claims

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