1-fenil-2-nitropropeno (P2NP) vaizdo sintezė iš benzaldehido ir nitroetano. Henrio reakcija.

GhostChemist

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Reaction scheme:
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Equipment and glassware:
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Reagents:
  • Benzaldehyde 1000 ml;
  • Nitroethane 1000 ml;
  • Glacial acetic acid 250 ml;
  • n-Butylamine 50 ml;
  • Isopropyl alcohol (IPA) ~1000 ml;
Medium scale:
1. Benzaldehyde 1000 ml, nitroethane 1000 ml, glacial acetic acid 250 ml and n-butylamine 50 ml are placed into 10 L flask.
2. A reflux condenser is installed onto the flask.
3. The stirrer and heater are turned on. The reaction mixture is heated up to 60 °С.
4. The reaction is conducted during 2-3 hours with constant stirring at 60 °С.
5. The reaction mixture is poured into an empty 5-10 L bucket.
6. Isopropyl alcohol (IPA) 800 ml is poured into the bucket and stirred.
7. The bucket with mixture is put into a freezer for 12 hours, 1-phenyl-2-nitropropene (
P2NP) is crystallized.
8. The product P2NP is filtered on a Buchner funnel (
suction filtration procedure), washed be a small amount of cold IPA and dried on air (or in vacuum chamber, optional).
The yield is 65-75%.



Equipment and glassware:
  • Beaker 500 ml;
  • Funnel;
  • Vacuum source;
  • Laboratory scale (0.1-500 g is suitable) - optional;
  • Measuring cylinders 50 mL and 100 mL;
  • Glass rod and spatula;
  • Filter paper;
  • Buchner flask and funnel;
  • Freezer;
  • Microwave oven 750 W;
Reagents:
  • Benzaldehyde 100 ml;
  • Nitroethane 100 ml;
  • Glacial acetic acid 25 ml;
  • n-Butylamine 20 ml;
  • Isopropyl alcohol (IPA) ~150 ml;

Microwave (small) scale:
1. Benzaldehyde 100 ml, nitroethane 100 ml, glacial acetic acid 25 ml and n-butylamine 20 ml are placed into 500 ml beaker.
2. A rubber glove is put onto the beaker.
3. The beaker is put into a microwave oven.
4. The power of the microwave oven is set up on 750 W. Oven is turned on and the mixture is warmed until the boiling. The mixture is cooled down to the room temperature.
5. Step 4 is repeated several times. Minimum 6 times.
6. Next, IPA 100 ml is added, reaction mixture is stirred and put into a freezer for 12 hours. 1-Phenyl-2-nitropropene (
P2NP) is crystallized.
7. The product P2NP is filtered on a Buchner funnel (suction filtration procedure), washed be a small amount of cold IPA and dried on air (or in vacuum chamber, optional).

1-Phenyl-2-nitropropene (P2NP) recrystallization

1-Phenyl-2-nitropropene (P2NP) can be recrystallized from hexane, methanol, ethanol or isopropanol (IPA).
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tankikan

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Ar galiu sužinoti, ar nitrometanas yra lygus nitroetanui?

Ir ar galima šį elementą (kaip pridėtoje ekrano nuotraukoje) naudoti kaip n-butilaminą? Jei taip, kaip siūlytumėte elgtis?
 

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MisterAnonymous

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Atsiųskite man DM Pateiksiu jums kontaktus dėl nitroetano ir N-butilamino...
 

William D.

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Ne, tai skirtingi reagentai. Su nitrometanu gausime nitrostireną. Nitrometanas su kai kuriais pakeistais benzaldehidais tinka didelės klasės medžiagų, įvairių psichodelinių medžiagų šaltinių sintezei.
Ne
 
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Montecristo

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Kokia yra šilumos metodo išeiga?
 

William D.

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iki 1,5 kg
 
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cyb3r0

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Mano drauge, mes niekada negalime gauti nitroetano, ar šiuo atveju yra alternatyva?
 

HIGGS BOSSON

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Problemos dėl nitroetano Europoje prasidėjo dar 2007 m., vėliau palaipsniui visos šalys įvedė apribojimus šiam vertingam reagentui. O dabar yra du keliai: ieškoti tiekėjų tose šalyse, kuriose galioja silpni teisės aktai, kuriose išvystyta chemijos pramonė, pavyzdžiui, Bangladeše, arba sintetinti savarankiškai - tam pasiūlėme metodiką.
 

Alojz

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Kuo galima pakeisti arba susintetinti nitroetaną?
 

Kvadprime

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You can find methods of syntes nitroethane in another thread
 

anotherNovice

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Galiu rasti parfumerijai skirtą benzaldehidą, žymimą CAS 100-57-2. Ar tai tas pats, kas reikalaujama?
 

mactipo01

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Sveiki!!
kas yra ipa?
ir kiek metanfetamino galiu gauti su šiuo procesu?
ty beforhand :)
 

ActionAyi

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Izopropilo alkoholis, dar vadinamas 2-propanoliu
 

mactipo01

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kur galiu įsigyti 10 l kolbą?
 

HIGGS BOSSON

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Šioje temoje skelbiamas fenilnitropropeno, amfetamino sintezės pirmtako, gavimo būdas. Jei jums reikia metamfetamino, peržiūrėkite atitinkamas temas. IPA - izopropilo alkoholis

 
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mactipo01

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oh ty!!!.. labai gražu....yra labai sunku tai išmokti...ir ne paprasta tai padaryti.
jūs galbūt
parduodate? arba žinote, kur galėčiau nusipirkti stimuliuojančių tablečių?
 

William D.

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Kalbant apie šią temą, galime padėti su P2NP sinteze. Kitos diskusijos kitomis temomis
 

mactipo01

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Atsiprašau, esu naujokas... koks yra paprastas metamfetamino sintezės metodas? P2NP ar iš efedrino tablečių?
 

William D.

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P2NP/Al/Hg, geras būdas pradėti, bet sudėtingas dideliems masteliams
 
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a_king

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kaip gauti n-butilameną prašome
 

William D.

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u gali pakeisti į cikloheksilaminas
 

Macondor

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Heksametilentetraminas gali būti naudojamas Piperonalui į MDP2NP?
 

ASheSChem

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Sveiki, vaikinai;
jei naudojame cikloheksilaminą, ar mums reikia ledinės acto rūgšties ?
 
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