4-(4-Methoxyphenyl)-2-butanone

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Lub npe: 4-(4-Methoxyphenyl)-2-butanone
CAS Nr .: 104-20-1
EINECS tus ID nkag mus: 203-184-2
Cov mis mos molecular: C11H14O2
Molecular Luj: 178.23

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Product Detail

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Lub cev
Cov tsos mob: tsis muaj xim rau yellowish oily kua
Ceev: 1.046 g / mL ntawm 25 ° C (lit.)
Melting point: 8 ° C (lit.)
Kub taw tes: 152-153 ° C / 15 mmHg (lit.)
Refractive Index: N20 / D 1.519 (lit.)
Flash point:> 230 ° F

Cov ntaub ntawv kev nyab xeeb
Kev lis kev cai Code: 2914299090
Export Tax Refund Rate (%): 13%

Daim ntawv thov
Txheej txheem cej luam;4-(4-methoxyphenyl)-2-butanone tuaj yeem siv los npaj 4-p-hydroxyphenyl-2-butanone, 4-p-hydroxyphenyl-2-butanone, tseem hu ua raspberry ketone, pendant ketone, raspberry ketone (raspberryketone) , nrhiav tau los ntawm Nomura et al.Hauv Nyij Pooj xyoo 1918, tau txheeb xyuas xyoo 1957 ua cov tshuaj tsw qab tseem ceeb hauv raspberries.
Cov txheej txheem ntau lawm: Raspberry ketone thiab dimethyl sulfate ua raw cov ntaub ntawv, cov tshuaj tiv thaiv etherification los tsim.
Kev npaj:
1. condensation cov tshuaj tiv thaiv nrog aniseed aldehyde, acetone thiab sodium hydroxide raws li raw cov ntaub ntawv, tom qab cov tshuaj tiv thaiv tiav, lub qis alkali txheej yog sib cais, thiab lub Upper roj yog neutralized, ntxuav thiab distilled kom rov qab cov kuab tshuaj kom tau aniseed butenone;
2. ntxiv anisyl butenone rau anhydrous cawv, ntxiv catalyst thiab do cov tshuaj tiv thaiv nrog hydrogen, distill thiab rov qab cov kuab tshuaj tom qab cov tshuaj tiv thaiv.
Tom qab cov tshuaj tiv thaiv, cov dej cawv anhydrous tau zoo los ntawm distillation kom tau txais cov khoom siv hydrogenated anisyl acetone.
Anisyl acetone tuaj yeem siv los npaj raspberry ketone, suav nrog cov kauj ruam nram qab no: anisyl acetone, potassium hydroxide, N, N.
dimethylacetamide yog ntxiv rau qhuav tetra] vial nruab nrog tus pas ntsuas kub, xaum funnel, thiab condensing raj, rhuab kom yaj, thiab tom qab ntawd hauv qab nplawm.
Nyob rau hauv stirring tej yam kev mob, lub demethyl reagent tau maj mam ntxiv dropwise thiab cov khoom raug tso kom yaj tag.Cov sib tov tau pauv mus rau autoclave nyob rau hauv inert gas tiv thaiv thiab reacted nyob rau hauv siab.Cov tshuaj tiv thaiv sib xyaw yog nruab nrab rau nruab nrab, thiab cov roj theem tau muab rho tawm thiab distilled nyob rau hauv kev txo qis los npaj raspberry ketone crude.Cov khoom nyoos ntawm raspberry ketone tau yaj nrog hnyav thiab crystallized kom tau txais cov khoom ntshiab ntawm raspberry ketone.Lub yield ntawm invention yog
85.2%, thiab cov khoom purity yog 98 5%.
Anisylacetone yog xim tsis muaj xim rau daj daj oily kua nrog paj thiab fruity aroma.Nws yog ib qho nruab nrab ntawm dobutamine, uas tam sim no tsuas yog siv los ua cov txuj lom los npaj ntau yam txiv hmab txiv ntoo flavors, thiab siv rau hauv cov dej qab zib, dej qab zib, khoom qab zib, ci thiab khoom noj qab zib.Nws yog ib qho txuj ci tseem ceeb.Nws kuj yog ib qho attractant rau kab xws li scarabs.