CN100560556C - A kind of synthetic method of cyclohexyloxy allyl acetate - Google Patents
A kind of synthetic method of cyclohexyloxy allyl acetate Download PDFInfo
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- CN100560556C CN100560556C CNB2007100711535A CN200710071153A CN100560556C CN 100560556 C CN100560556 C CN 100560556C CN B2007100711535 A CNB2007100711535 A CN B2007100711535A CN 200710071153 A CN200710071153 A CN 200710071153A CN 100560556 C CN100560556 C CN 100560556C
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Abstract
The present invention has announced a kind of synthetic method of chemical technology field, specifically is meant a kind of synthetic method of cyclohexyloxy allyl acetate.The present invention is to be that catalyst for hydrogenation any among Ni, Pt, Rh, the Ru joins in the phenoxy acetic acid with containing active ingredient, catalytic hydrogenation reaction obtains cyclohexyloxy, then cyclohexyloxy and vinyl carbinol is obtained cyclohexyloxy allyl acetate through esterification under an acidic catalyst effect.Advantages such as advantage of the present invention is that to have raw material sources extensive, easy and simple to handle, and product yield is high and environmentally friendly.Product of the present invention is a kind of very good fixative, is widely used in fields such as food, daily use chemicals, tobacco.
Description
Technical field
The invention belongs to chemical technology field, is a kind of synthetic method of cyclohexyloxy allyl acetate.
Technical background
Cyclohexyloxy allyl acetate is the strongest kind of fragrance in the fluffy ester perfume of a kind of lattice, it is the Persian bottom note as green pineapple and the granny smith, because its fragrance remaining time is long, compound property is good, has pleasant, pure and fresh fragrance, be a kind of very good fixative, be widely used in fields such as food, daily use chemicals, tobacco.Synthetic method bibliographical information about it is less.
Galbanum oxyacetate is made through esterification by hexamethylene fluoroacetic acid and allyl ester.
All the time, cyclohexyloxy mainly adopts the Williamson prepared in reaction, is feedstock production cyclohexyloxy sodium (US4735932 with hexamethylene sodium alkoxide and sodium chloroacetate promptly; Fine chemistry industry 1999,16:1-16), the acidifying of cyclohexyloxy sodium makes the hexamethylene fluoroacetic acid.
The hexamethylene fluoroacetic acid yield that this method generates has only about in the of 80%, and product purity is not high, and cost is higher.Report (" modern chemical industry " 2007 also arranged, 27:42-45) adopt ethyl diazoacetate (EDA) and hexalin under two salicylic aldehyde copper katalysis, to carry out the precursor compound cyclohexyloxy ethyl ester that the O-H insertion reaction has synthesized above-mentioned spices, obtain target product by transesterify again.Because diazonium compound is dangerous big, costs an arm and a leg, be difficult to realize suitability for industrialized production.
Summary of the invention
The object of the present invention is to provide that a kind of raw material sources are extensive, easy and simple to handle, product yield is high and the synthetic method of environment amenable cyclohexyloxy allyl acetate, can solve the problem that prior art exists effectively.
The synthetic method of cyclohexyloxy allyl acetate provided by the invention, be that phenoxy acetic acid is dissolved in the appropriate solvent, under certain pressure and temperature condition, obtain cyclohexyloxy through a step hydrogenation reaction, cyclohexyloxy and vinyl carbinol obtain cyclohexyloxy allyl acetate through esterification under an acidic catalyst effect, wherein selecting appropriate catalyst is key of the present invention.
In the hydrogenation reaction,, add catalyzer again after can first preheating hydrogenation still phenoxy acetic acid being melted, also can select for use appropriate solvent at room temperature to dissolve the phenoxy acetic acid back end hydrogenation because the phenoxy acetic acid fusing point is higher.Because the more difficult hydrogenating reduction of phenyl ring in the phenoxy acetic acid molecule, contain simultaneously carbonyl again, therefore will consider activity of such catalysts and selectivity simultaneously during selecting catalyst, requiring to select for use has good catalytic hydrogenation and carbonyl is not played the catalyzer of katalysis phenyl ring.Hydrogenation reaction is carried out under certain temperature and pressure, when material in reactor is not inhaled hydrogen, promptly accuses hydrogenation reaction and finishes.
The catalyzer wide material sources that the present invention uses, manufacturer is numerous.Its active ingredient is any among Ni, Pt, Rh, the Ru, and when being the catalyst activity component with Pt, Rh or Ru, the weight percentage of active ingredient is 0.1～5%, preferred 2～5%; And when being the catalyst activity component with Ni, the weight percentage of active ingredient is 5～50%, preferred 5～30%.The carrier of catalyzer is aluminum oxide, gac, silicon-dioxide.The add-on of catalyzer (comprising vector contg, not moisture) is 0.1%～20%, preferred 0.5%～5%; Reaction process condition is 50～300 ℃ of temperature, preferred 80～200 ℃; Hydrogen pressure is 1.0～15MPa, preferred 2.0～12MPa; In 3～60 hours reaction times, be as the criterion to react completely.Reaction also can select for use aqueous sodium hydroxide solution, water, acetate to make solvent without solvent; According to above method, reaction finishes after-filtration, and greater than 99%, so crude product needn't rectifying with the content of hexamethylene fluoroacetic acid in the crude product that obtains after the acidifying, can be directly as the raw material of next step reaction.
Hexamethylene fluoroacetic acid and vinyl carbinol are to carry out in the presence of acid catalyst through the reaction of esterification synthesizing cyclohexane 1 fluoroacetic acid allyl ester, reaction conditions is the mol ratio 1: 1～1: 5 of hexamethylene fluoroacetic acid and vinyl carbinol, 50～140 ℃ of temperature of reaction, reaction times is 3～10 hours, catalyzer be in sulfuric acid, tosic acid, sulfonic acid type storng-acid cation exchange resin, the solid heteropoly acid any one, the add-on 0.5%～15% of catalyzer, the band aqua is benzene, toluene, hexanaphthene.After reaction finishes, reaction solution is washed to neutrality, drying is carried out underpressure distillation, collects the 84 ℃～cut of 86 ℃ (400Pa), promptly gets cyclohexyloxy allyl acetate.
Implementation procedure of the present invention is such:
A kind of synthetic method of cyclohexyloxy allyl acetate, it is to be that catalyst for hydrogenation any among Ni, Pt, Rh, the Ru joins in the phenoxy acetic acid with containing active ingredient, catalytic hydrogenation reaction obtains cyclohexyloxy, then cyclohexyloxy and vinyl carbinol is obtained cyclohexyloxy allyl acetate through esterification under an acidic catalyst effect.As preferably, above-mentioned when containing active ingredient and being the catalyzer of Ni, the weight percentage of active ingredient is 5～50%, as better selection, when containing active ingredient and being the catalyzer of Ni, the weight percentage of active ingredient is 10～30%, or when being the catalyst activity component with Pt, Rh or Ru, the weight percentage of active ingredient is 0.1～5%, as better selection, when being the catalyst activity component with Pt, Rh or Ru, the weight percentage of active ingredient is 2～4%.The carrier of catalyzer is one or more in aluminum oxide, gac, the silicon-dioxide.
The add-on of above-mentioned catalyst for hydrogenation (weight percent comprises vector contg, and is not moisture) is 0.1%～20%.As better selection, the add-on of catalyst for hydrogenation (weight percent comprises vector contg, and is not moisture) is 0.5%～5%.
As preferably, described catalyst for hydrogenation joins before the phenoxy acetic acid, and first preheating is melted phenoxy acetic acid or phenoxy acetic acid is dissolved in aqueous sodium hydroxide solution, water or the acetate.
As preferably, described hydrogenation conditions is controlled to be 50～300 ℃ of temperature, and hydrogen pressure is 1.0～15MPa, 3～60 hours reaction times.As better selection, hydrogenation conditions is controlled to be 80～200 ℃ of temperature, and hydrogen pressure is 2.0～12MPa, 10～40 hours reaction times.
As preferably, an acidic catalyst is a kind of in sulfuric acid, tosic acid, sulfonic acid type storng-acid cation exchange resin, the solid heteropoly acid, and the add-on of catalyzer (weight percent) is 0.5%～15%.Esterification condition wherein is 50～140 ℃ of temperature of reaction, and the reaction times is 3～10 hours, the mol ratio of cyclohexyloxy and vinyl carbinol 1: 1～5.
Advantages such as beneficial effect: it is extensive that the present invention has raw material sources, easy and simple to handle, and product yield is high and environmentally friendly.
Embodiment
Embodiment 1
Synthesizing of cyclohexyloxy
In 1L high-pressure hydrogenation still, add the 200g phenoxy acetic acid, 0.5g 5%Rh/C catalyzer (containing 50% water), 150g distilled water carries out hydrogenation reaction and finishes to inhaling hydrogen under 100 ℃ of temperature, pressure 3MPa condition.Reaction product behind the hydrogenation removes aqueous solvent under reduced pressure after filtering, and obtains the cyclohexyloxy crude product, and content in crude product is 99%, turnover ratio 99%.Crude product directly enters next step esterification without rectifying.
Embodiment 2
Synthesizing of cyclohexyloxy
In 1L high-pressure hydrogenation still, add the 150g phenoxy acetic acid, 1.5g5%Ru/C catalyzer (containing 50% water), the sodium hydroxide solution of 300g10% carries out hydrogenation reaction and finishes to inhaling hydrogen under 120 ℃, pressure 9MPa condition.It is about 2 that filtrate behind the hydrogenation is regulated the pH value with the vitriol oil, stirs standing demix, and the upper strata oil reservoir is cyclohexyloxy, and water layer with the extraction of 100g toluene once.The cyclohexyloxy content in crude product 98.5% that obtains, turnover ratio is more than 98%.
Embodiment 3
Synthesizing of galbanum oxyacetate
In being housed, the there-necked flask of water trap adds hexamethylene fluoroacetic acid crude product 158g, vinyl carbinol 58g, toluene 237g, tosic acid 4.5g, MEHQ 0.4g, stir when being heated to 110 ℃ of still temperature down cooling reaction solution to 90 ℃, add again and continue to react extremely almost till anhydrous the telling about 5 hours of reaction times behind the 17.4g vinyl carbinol.Product after the esterification is washed with the 300ml saturated sodium bicarbonate solution earlier, washed with water to neutrality again.The organic layer anhydrous magnesium sulfate drying, 84 ℃～86 ℃ (400Pa) cuts are collected in rectifying behind the rough vacuum recovery toluene, promptly obtain cyclohexyloxy allyl acetate yield 89%.
Claims (10)
1, a kind of synthetic method of cyclohexyloxy allyl acetate, it is characterized in that containing active ingredient is that catalyst for hydrogenation any among Ni, Pt, Rh, the Ru joins in the phenoxy acetic acid, catalytic hydrogenation reaction obtains cyclohexyloxy, then cyclohexyloxy and vinyl carbinol is obtained cyclohexyloxy allyl acetate through esterification under an acidic catalyst effect.
2, synthetic method according to claim 1, it is characterized in that described when containing active ingredient and being the catalyzer of Ni, the weight percentage of active ingredient is 5～50%, or when being the catalyst activity component with Pt, Rh or Ru, the weight percentage of active ingredient is 0.1～5%, and the carrier of catalyzer is one or more in aluminum oxide, gac, the silicon-dioxide.
3, synthetic method according to claim 2, it is characterized in that described when containing active ingredient and being the catalyzer of Ni, the weight percentage of active ingredient is 10～30%, or when being the catalyst activity component with Pt, Rh or Ru, the weight percentage of active ingredient is 2～4%.
4, synthetic method according to claim 1, the add-on that it is characterized in that described catalyst for hydrogenation is 0.1%～20%, ratio wherein is weight percentage, and comprises vector contg, and is not moisture.
5, synthetic method according to claim 4, the add-on that it is characterized in that described catalyst for hydrogenation is 0.5%～5%, ratio wherein is weight percentage, and comprises vector contg, and is not moisture.
6, synthetic method according to claim 1 is characterized in that described catalyst for hydrogenation joins before the phenoxy acetic acid, and first preheating is melted phenoxy acetic acid or phenoxy acetic acid is dissolved in aqueous sodium hydroxide solution, water or the acetate.
7, synthetic method according to claim 1 is characterized in that described hydrogenation conditions is controlled to be 50～300 ℃ of temperature, and hydrogen pressure is 1.0～15MPa, 3～60 hours reaction times.
8, synthetic method according to claim 7 is characterized in that described hydrogenation conditions is controlled to be 80～200 ℃ of temperature, and hydrogen pressure is 2.0～12MPa, 10～40 hours reaction times.
9, synthetic method according to claim 1, it is characterized in that described an acidic catalyst is a kind of in sulfuric acid, tosic acid, sulfonic acid type storng-acid cation exchange resin, the solid heteropoly acid, the add-on of catalyzer is 0.5%～15%, and ratio wherein is weight percentage.
10, synthetic method according to claim 1 is characterized in that described esterification condition is 50～140 ℃ of temperature of reaction, and the reaction times is 3～10 hours, the mol ratio of cyclohexyloxy and vinyl carbinol 1: 1～5.
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| CNB2007100711535A CN100560556C (en) | 2007-09-14 | 2007-09-14 | A kind of synthetic method of cyclohexyloxy allyl acetate |
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| CN103084209B (en) * | 2011-10-27 | 2014-12-10 | 中国科学院大连化学物理研究所 | Application of nickel base micropore material in esterification reaction catalysis |
| CN107915627B (en) * | 2017-12-04 | 2022-04-22 | 昆山亚香香料股份有限公司 | Method for synthesizing cyclohexyloxy allyl acetate by one-pot method |
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Non-Patent Citations (4)
| Title |
|---|
| 2-环己氧基乙酸烯丙酯的合成. 邓淑华，周立清，成晓玲.精细化工，第16卷第4期. 1999 |
| 2-环己氧基乙酸烯丙酯的合成. 邓淑华，周立清，成晓玲.精细化工，第16卷第4期. 1999 * |
| Studies on hypolipidemic agents. III. Synthesis andesterase-inhibitory activity ofw-cycloalkyl-2-oxoalkylarenesulfonates. Ogawa, Kazuo, Terada, Tadafumi, Muranaka, Yoshiyuki,Hamakawa, Toshihiro, Fujii, Setsuro.Chem. Pharm. Bull.,Vol.35 No.6. 1987 |
| Studies on hypolipidemic agents. III. Synthesis andesterase-inhibitory activity ofw-cycloalkyl-2-oxoalkylarenesulfonates. Ogawa, Kazuo, Terada, Tadafumi, Muranaka, Yoshiyuki,Hamakawa, Toshihiro, Fujii, Setsuro.Chem. Pharm. Bull.,Vol.35 No.6. 1987 * |
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