CN101260042A - Method for preparing cinnamyl acetate - Google Patents

Method for preparing cinnamyl acetate Download PDF

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Publication number
CN101260042A
CN101260042A CNA2008100473584A CN200810047358A CN101260042A CN 101260042 A CN101260042 A CN 101260042A CN A2008100473584 A CNA2008100473584 A CN A2008100473584A CN 200810047358 A CN200810047358 A CN 200810047358A CN 101260042 A CN101260042 A CN 101260042A
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China
Prior art keywords
cinnamyl acetate
styryl carbinol
cinnamyl
temperature
reaction
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CNA2008100473584A
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Chinese (zh)
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CN100595185C (en
Inventor
叶传发
朱如慧
余苗苗
阮令飞
华好好
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HUBEI YUANCHENG PHARMACEUTICAL CO., LTD.
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WUHAN HEZHONG BIO-CHEMICAL MANUFATURE Co Ltd
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Priority to CN200810047358A priority Critical patent/CN100595185C/en
Publication of CN101260042A publication Critical patent/CN101260042A/en
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Publication of CN100595185C publication Critical patent/CN100595185C/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention discloses a preparation method for cinnamyl acetate. The steps of the method are as follows: A) cinnamic alcohols and acetic anhydrides are mixed for reaction according to a certain mol ratio; catalysts are taken to dissolve in the acetic anhydrides, and the temperature is preserved, and the cinnamic alcohols are dropwise added; B) after the addition of the cinnamic alcohols, the temperature is kept in the range of from 40 to 50 DEG C for reaction; C) after the heat preservation, the cinnamyl acetate products are obtained by the water washing and neutralization; D) the cinnamyl acetate products obtained undergo the fraction collection under the vacuum of negative 0.096 to negative 0.1Mpa, obtaining the cinnamyl acetate finished products; the invention has the advantages of simple method, convenient operation, low material costs, high yield and no environmental pollution, and is quite suitable for the industrialized production; moreover, the yield of the production of the cinnamyl acetate is as high as 88.6 percent.

Description

A kind of preparation method of cinnamyl acetate
Technical field
The invention belongs to chemical field, be specifically related to a kind of preparation method of cinnamyl acetate, its mainly as fragrance applications in type essence such as configuration cassia bark, apple, cherry and pineapples; Compound perfume as essence such as jacinthe, cloves, the lily of the valley, jasmine, masts.
Background technology
The cinnamyl acetate chemical name is a cinnamyl acetate, is a kind of important fine-chemical intermediate, is widely used in the production of products such as medicine, spices.The universal method of preparation cinnamyl acetate mainly contains at present: 1, adopt hot caustic solution to handle and extract acetate acid cinnamic ester in natural Styrox, white Surinam balsam, Oleum Cinnamomi, the silvery white cassie oil, it is higher that this method is produced preparation cinnamyl acetate cost, the starting material difficulty is asked, complex process, production cycle is long, and contaminate environment is serious; 2, direct esterification in the presence of the vitriol oil is reacted and is produced by cinnamic alcohol and acetate, though adopt this method production cinnamyl acetate technology simple, by product is many, and product purity is poor, and yield is low; 3, directly prepare cinnamyl acetate through acetylization reaction by styryl carbinol and diacetyl oxide, this technology is simple, and is easy to operate, but the transformation efficiency of used raw meat cinnamic alcohol is low, and product purity does not reach quality standard; 4, adopt sodium acetate and cinnamyl chlorine at N, there is time prepared in reaction cinnamyl acetate in dinethylformamide, and the raw materials used cinnamyl chlorine of this technology is poisonous and cost an arm and a leg, market supply is limited, employed solvent N, the dinethylformamide price is also relatively more expensive, and product yield has only 54%.
Summary of the invention
Purpose of the present invention overcomes above-mentioned described the deficiencies in the prior art exactly, and a kind of preparation side of cinnamyl acetate is provided.The present invention adopts diacetyl oxide and styryl carbinol, is the Preparation of Catalyst cinnamyl acetate with phosphoric acid or tosic acid, and technology is simple, and is easy to operate, and raw material is easy to get, with low cost, and the yield height, and quality is good, and is also pollution-free to environment, is very suitable for suitability for industrialized production.
To achieve these goals, the present invention by the following technical solutions, its step is
A, styryl carbinol and diacetyl oxide are 1 in molar ratio: the 1-3 reaction that feeds intake.0.5 or 1 or 2 or 3% the catalyzer (catalyzer is 85 or 88 or 92 or 98% phosphoric acid or tosic acid) of measuring by the styryl carbinol quality is dissolved in the diacetyl oxide, stir, holding temperature is controlled at 20 or 24 or 28 or 32 or 37 or 42 or 45 ℃ and drips styryl carbinol, and the styryl carbinol dropping time is 5 or 6 or 7 hours.
B, styryl carbinol dropwise, and temperature remains on 40 or 44 or 48 or 50 ℃ of reactions 1 or 2 hour.
C, the insulation finish through washing neutralize the cinnamyl acetate crude product.
The cinnamyl acetate crude product of D, gained is collected the cinnamyl acetate finished product in 140 or 148 or 156 or 162 or 170 or 174 ℃ under decompression-0.096--0.1Mpa condition.
The inventive method is easily gone, and technology is simple, and production cost is low, and is pollution-free, stable and reliable product quality, and raw material is easy to get, and is highly suitable for suitability for industrialized production, and producing the cinnamyl acetate yield can be up to 88.6% (in styryl carbinol).
Embodiment
Embodiment 1:
0.7g85% phosphoric acid or tosic acid are dissolved in 150g (1.47mol) diacetyl oxide stir, maintain the temperature at 20 or 24 or 28 or 32 or 37 or 42 or 45 ℃ and drip styryl carbinol 134g (1.0mol), the styryl carbinol dropping time is 5 or 6 or 7 hours.Styryl carbinol dropwises and remains on 40 or 44 or 48 or 50 ℃ of reactions 1 or 2 hour.The insulation finish through washing neutralize the cinnamyl acetate crude product.The cinnamyl acetate of gained is collected cinnamyl acetate finished product 143.4g, yield 82.4% in 170-174 ℃ under decompression-0.096Mpa condition.Product purity reaches 98.4%.
Embodiment 2
1.4g88% phosphoric acid or tosic acid are dissolved in 102g (1.0mol) diacetyl oxide stir, maintain the temperature at 20 or 22 or 26 or 30 or 35 or 40 or 45 ℃ and drip styryl carbinol 134g (1.0mol), the styryl carbinol dropping time is 5 or 6 or 7 hours.Styryl carbinol dropwises and remains on 40 or 43 or 47 or 50 ℃ of reactions 1 or 2 hour.The insulation finish through washing neutralize the cinnamyl acetate crude product.The cinnamyl acetate of gained is collected cinnamyl acetate finished product 148.0g, yield 84.1% in 162-166 ℃ under decompression-0.098Mpa condition.Product purity reaches 98.5%.
Embodiment 3
2.7g92% phosphoric acid or tosic acid are dissolved in 204g (2mol) diacetyl oxide stir, maintain the temperature at 20 or 23 or 27 or 31 or 39 or 43 or 45 ℃ and drip styryl carbinol 134g (1.0mol), the styryl carbinol dropping time is 5 or 6 or 7 hours.Styryl carbinol dropwises and remains on 40 or 45 or 49 or 50 ℃ of reactions 1 or 2 hour.The insulation finish through washing neutralize the cinnamyl acetate crude product.The cinnamyl acetate of gained is collected cinnamyl acetate finished product 151.7g, yield 86.2% in 154-157 ℃ under decompression-0.099Mpa condition.Product purity reaches 98.5%.
Embodiment 4
4.0g98% phosphoric acid or tosic acid are dissolved in 306g (3mol) diacetyl oxide stir, maintain the temperature at 20 or 25 or 29 or 34 or 38 or 41 or 45 ℃ and drip styryl carbinol 134g (1.0mol), the styryl carbinol dropping time is 5 or 6 or 7 hours.Styryl carbinol dropwises and remains on 40 or 42 or 46 or 50 ℃ of reactions 1 or 2 hour.The insulation finish through washing neutralize the cinnamyl acetate crude product.The cinnamyl acetate of gained is collected cinnamyl acetate finished product 157.8g, yield 89.7% in 140-144 ℃ under decompression-0.1Mpa condition.Product purity reaches 98.7%.

Claims (1)

1, a kind of preparation method of cinnamyl acetate the steps include:
A, styryl carbinol and diacetyl oxide are 1 in molar ratio: the 1-3 reaction that feeds intake, be dissolved in the diacetyl oxide by the catalyzer of measuring of the 0.5-3% of styryl carbinol quality, and stir, the temperature of insulation is controlled at 20-45 ℃ and drips styryl carbinol, and the styryl carbinol dropping time is 5-7 hour;
B, styryl carbinol dropwise, and temperature remains on 40-50 ℃ of reaction 1 or 2 hour;
C, the insulation finish through washing neutralize the cinnamyl acetate article;
D, with the cinnamyl acetate article of gained under vacuum-0.096--0.1Mpa, the cut of collecting 140-174 ℃ gets the cinnamyl acetate finished product;
Described catalyzer is that concentration is phosphoric acid or the tosic acid of 85-98%.
CN200810047358A 2008-04-17 2008-04-17 Method for preparing cinnamyl acetate Expired - Fee Related CN100595185C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200810047358A CN100595185C (en) 2008-04-17 2008-04-17 Method for preparing cinnamyl acetate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200810047358A CN100595185C (en) 2008-04-17 2008-04-17 Method for preparing cinnamyl acetate

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CN101260042A true CN101260042A (en) 2008-09-10
CN100595185C CN100595185C (en) 2010-03-24

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101591243B (en) * 2009-05-11 2012-06-20 江苏省原子医学研究所 Method for preparing acetic acid phenolic ester by catalyzing bisphosphonates
CN105104922A (en) * 2015-07-23 2015-12-02 江西省添美食品有限公司 Additive used for quick-frozen pastries

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101591243B (en) * 2009-05-11 2012-06-20 江苏省原子医学研究所 Method for preparing acetic acid phenolic ester by catalyzing bisphosphonates
CN105104922A (en) * 2015-07-23 2015-12-02 江西省添美食品有限公司 Additive used for quick-frozen pastries
CN105104922B (en) * 2015-07-23 2018-09-07 帅兵 A kind of additive for quick-frozen pastry

Also Published As

Publication number Publication date
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