CN105085209B - A kind of preparation method of high-purity cocker aldehyde - Google Patents

A kind of preparation method of high-purity cocker aldehyde Download PDF

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Publication number
CN105085209B
CN105085209B CN201510557304.2A CN201510557304A CN105085209B CN 105085209 B CN105085209 B CN 105085209B CN 201510557304 A CN201510557304 A CN 201510557304A CN 105085209 B CN105085209 B CN 105085209B
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aldehyde
cocker
purity
preparation
low
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CN105085209A (en
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程存照
贾卫民
王之建
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Mount Huangshan Kehong Biotechnology Co ltd
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HUANGSHAN KELONG BIO-FLAVORS Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/67Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/78Separation; Purification; Stabilisation; Use of additives

Abstract

The invention discloses using low-purity cocker aldehyde as raw material, after being mixed with organic acid solvent, the catalysis of iodo salt is added, with being reacted 13 hours at a temperature of 30~100 DEG C, scrubbed, distillation produces high-purity cocker aldehyde.The cocker aldehyde purity that this manufacture method is obtained is high and old low, simple to operate, prepared by the high-purity that can be widely applied to cocker aldehyde.

Description

A kind of preparation method of high-purity cocker aldehyde
Technical field
The present invention relates to a kind of preparation method of high-purity compound, more particularly to a kind of preparation side of high-purity cocker aldehyde Method.
Background technology
Cocker aldehyde, also known as trans -5- methyl -2- phenyl -2- hexenoic aldehydes, molecular formula:C13H16O;(CH3) 2CHCH2CH= C (C6H5) CHO, structural formula is as follows:
In bitter cocoa, nut, honey, baking and green grass fragrance, natural product are present in the volatility thing for frying peanut and cocoa In matter.Used mainly for preparation chocolate essence and cacao essence.
Cocker aldehyde can carry out aldol condensation by phenylacetaldehyde and isopentyl aldehyde and obtain, and it has cis and trans isomers, and suitable, anteiso- Structure body ratio is about 1:9, the low-purity cocker aldehyde of content 90% or so is obtained through simple distillation, must can be contained through further rectifying purifying 95% or so finished product is measured, but its purity is still relatively low, it is impossible to meet the demand in market.Because cis-trans-isomer boiling point is high and boiling Point is approached, therefore, and industry at present separates cis and trans isomers using rectifying, and raising finished product purity is extremely difficult, and yield rate is low, system Cause high.
Above-mentioned cis-trans isomerization is a kind of important stereo-isomerism, and influence of the cocker aldehyde configuration to spices fragrance is very Greatly, thus cis-trans-isomer configuration conversion be increasingly subject to research attention, pass through configuration conversion improve product quality.On double The conversion of key configuration mainly includes three kinds of light isomery, hot isomery and catalytic isomerization, and wherein catalytic isomerization is increasingly by vast research Person must pay attention to.
The content of the invention
It is an object of the invention to provide a kind of preparation method of high-purity cocker aldehyde, solve existing cocker aldehyde preparation method and obtain The cocker aldehyde purity obtained is low, and further extracts difficulty greatly, the problem of cost is high.
The present invention solve technical problem technical scheme be:A kind of preparation method of high-purity cocker aldehyde, can with low-purity Card aldehyde is raw material, after being mixed with organic acid solvent, adds the catalysis of iodo salt, with being reacted 1-3 hours at a temperature of 30~100 DEG C, High-purity cocker aldehyde is produced through cooling washing, vacuum distillation.The mass ratio of the low-purity cocker aldehyde, organic acid and iodo salt is 100:100:0.1~1.
It is preferred that, the iodo salt is sodium iodide or KI.
It is preferred that, the organic acid is one kind in formic acid, acetic acid, propionic acid, butyric acid.
Compared with prior art, the present invention using the method for chemical catalysis by the syn-isomerism in existing low-purity cocker aldehyde Body is converted into transisomer, so as to improve the purity of cocker aldehyde.The cocker aldehyde purity obtained by this method can reach More than 98%, it disclosure satisfy that the demand of in the market.And this method reaction environment is simple, production and processing is convenient, and cost is low.
Embodiment
The present invention is described in further detail below by embodiment, but is not intended to limit the present invention.
Iodo salt used is that domestic analysis is pure in the present invention, is purchased from Chemical Reagent Co., Ltd., Sinopharm Group;Content 90% cocker aldehyde is directly from market purchasing.
Instrument of the present invention:GC-1690 gas chromatographs (Hangzhou section dawn chemical industry experimental instruments and equipment limited)
A kind of high-purity cocker aldehyde preparation method, in flask with three necks,round bottom, add iodo salt, 90% content cocker aldehyde, Etc. quality organic acid, controlling reaction temperature is 30~100 DEG C, is reacted 1~3 hour, chromatogram tracking analysis.Work as cis and trans isomers Than less than 2:98, reaction.Solvent is recovered under reduced pressure, residue uses general separation method, through cooling washing, is distilled in vacuum to give Product, gas chromatographic analysis measures the content of cocker aldehyde more than 98%.Cooling cleaning function is to reduce significant loss, is removed residual Stay solvent,;Because cocker aldehyde boiling point is high, using vacuum distillation, boiling point is reduced.
Embodiment 1:
A kind of preparation method of high-purity cocker aldehyde, justifies in a 250ml equipped with thermometer, stirring and reflux condensate device In the flask of bottom, 0.2g sodium iodides, the cocker aldehyde of 100g contents 90% and 100 grams of acetic acid are added, stirs and evenly mixs, 2 is reacted at 60 DEG C Hour, show that cis-content is less than 1% by gas chromatographic analysis.Acetic acid, cooling washing, vacuum distillation are reclaimed in vacuum distillation, 81-83 DEG C/1mmHg cut 95g are collected, the content that gas chromatographic analysis measures cocker aldehyde is 98%.
Embodiment 2:
A kind of preparation method of high-purity cocker aldehyde, justifies in a 250ml equipped with thermometer, stirring and reflux condensate device In the flask of bottom, 0.3g KIs, the cocker aldehyde of 100g contents 90% and 100 grams of acetic acid are sequentially added, are reacted at stirring and 80 DEG C Time is 1h, and gas chromatographic analysis shows that cis-content is less than 1%.Acetic acid, cooling washing, vacuum distillation are reclaimed in vacuum distillation, 81-83 DEG C/1mmHg cut 95g are collected, the content that gas chromatographic analysis measures cocker aldehyde is 98.2%.
Embodiment 3:
A kind of preparation method of high-purity cocker aldehyde, justifies in a 250ml equipped with thermometer, stirring and reflux condensate device In the flask of bottom, 0.2g sodium iodides, the cocker aldehyde of 100g contents 90% and 100 grams of propionic acid are sequentially added, are reacted at stirring and 70 DEG C Time is 3h, and gas chromatographic analysis shows that cis-content is less than 1%.Propionic acid, cooling washing, vacuum distillation are reclaimed in vacuum distillation, 81-83 DEG C/1mmHg cut 94g are collected, the content that gas chromatographic analysis measures cocker aldehyde is 98.4%.

Claims (1)

1. a kind of preparation method of high-purity cocker aldehyde, it is characterised in that:Using low-purity cocker aldehyde as raw material, with organic acid solvent After mixing, the catalysis of iodo salt is added, with being reacted 1-3 hours at a temperature of 60~80 DEG C, height is produced through cooling washing, vacuum distillation Purity cocker aldehyde;
The iodo salt is sodium iodide or KI;
The organic acid is the mixture of one or both of acetic acid or propionic acid;
The mass ratio of the low-purity cocker aldehyde, organic acid and iodo salt is 100:100:0.1~1.
CN201510557304.2A 2015-09-02 2015-09-02 A kind of preparation method of high-purity cocker aldehyde Active CN105085209B (en)

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CN105085209B true CN105085209B (en) 2017-10-13

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Publication number Priority date Publication date Assignee Title
CN115466172A (en) * 2022-08-30 2022-12-13 绵阳市斯麦尔顾生物科技有限公司 Preparation method of spice cocaldehyde

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US3754038A (en) * 1970-11-23 1973-08-21 Int Flavors & Fragrances Inc 2-phenyl-2-alkenals
US3970701A (en) * 1973-07-30 1976-07-20 International Flavors & Fragrances Inc. Lower alkenals

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Address after: No. 24, Weiyi Road, She County Circular Economy Park, Mount Huangshan City, Anhui Province 245000

Patentee after: Mount Huangshan Kehong Biotechnology Co.,Ltd.

Country or region after: China

Address before: No. 24, Weiyi Road, She County Circular Economy Park, Mount Huangshan City, Anhui Province 245000

Patentee before: HUANGSHAN KEHONG BIO-FLAVORS CO.,LTD.

Country or region before: China