Videosinteza 1-fenil-2-nitropropena (P2NP) iz benzaldehida in nitroetana. Henryjeva reakcija.

tankikan

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Ali lahko vem, ali je nitrometan enak nitroetanu?

In ali je mogoče ta element (kot je priložena zaslonska slika) uporabiti kot n-butilamin? Če je odgovor pritrdilen, kako bi predlagali, da ravnam?
 

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HIGGS BOSSON

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Težave z nitroetanom v Evropi so se začele že leta 2007, nato pa so postopoma vse države uvedle omejitve za ta dragoceni reagent. In zdaj sta na voljo dve možnosti: poiskati dobavitelje v državah s šibko zakonodajo z razvito kemijsko industrijo, na primer v Bangladešu, ali samostojno sintetizirati, metodologijo za to smo predlagali.
 

Alojz

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S čim lahko nadomestimo ali sintetiziramo nitroetan?
 

Kvadprime

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You can find methods of syntes nitroethane in another thread
 

mactipo01

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Pozdravljeni!
kaj je ipa?
in koliko metanfetamina lahko dobim s postopkom?
ty beforhand :)
 

ActionAyi

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Izopropilalkohol, znan tudi kot 2-propan-ol
 

WillD

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u lahko zamenjate za cikloheksilamin
 

Macondor

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Heksametilentetramin se lahko uporabi za piperon za MDP2NP?
 

WillD

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Lahko, vendar so rezultati slabši, nikoli nisem rad uporabljal acetata v tej sintezi. Cikloheksilamin in butilamin sta najboljša katalizatorja.
 

Kvadprime

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From the bases I have aniline, do you have information on the yields for aniline as the base catalyst?
 

rampage

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Pozdravljeni
Nisem prepričan, ali je to pravo poglavje, vendar ali kdo ve, ali bo ta recept deloval?

Priprava fenilnitropropanola:
V primerno čašo ali erlenmajerico dajte 51 ml benzaldehida, nato 33 ml nitroetana,
takoj zatem dodajte 30 ml 30-odstotne raztopine kalijevega karbonata, vse skupaj hitro premešajte
pri sobni temperaturi 2 uri.
Morda bo potrebna hladna vodna kopel ali ledena kopel, da se reakcijska zmes ohrani pri sobni temperaturi
(sobna temperatura) ali nižja. Reakcijska zmes ne sme presegati 25 stopinj Celzija.
Po dveh urah mešanja reakcijski zmesi dodamo 200 ml dietiletra, kmalu zatem dodamo
90 ml 10-odstotne raztopine natrijevega bisulfita in 30 minut zmerno mešamo celotno reakcijsko zmes.
Nato celotno reakcijsko zmes prestavimo v separacijski lij in odstranimo spodnjo vodno
etrsko plast, etrsko plast pustimo v ločilnem lijaku in etrsko plast speremo s 3 x 75 ml
hladne vode, pri čemer vsakič odstranimo spodnjo vodno plast.
Etersko plast prenesemo v ustrezno čašo ali erlenmajerico in dodamo 15 g brezvodnega magnezija
sulfata in celotno zmes mešamo 10 minut, da se absorbira vsa voda v etru. Nato filtriramo
magnezijev sulfat.
Prefiltrirano zmes etra dajte v aparat za destilacijo in odstranite eter, ko ni več etra.
prehaja ali se zbira, pustimo, da se ostanek ohladi na sobno temperaturo, nato ta ostanek zberemo, ko se
je sestavljen iz želenega fenilnitropropanola.
 

handle

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Nitroalken lahko reduciramo s Fe in HCl. >Tudi<
Dl24ZzwxB3
 

BongMan

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redukcijo s Fe in Hcl plazovito in ni dobro za uporabo v velikem obsegu, namesto tega je Tin(II)klorid lažji in izvedljiv tako v laboratoriju kot v velikem obsegu.
 

strong

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Zmešal sem žveplovo kislino in etanol, nato nisem uporabil kalcijevega karbonata, dodal sem le natrijev karbonat in naredil natrijev etilsulfat, nato sem s segrevanjem natrijevega etilsulfata in natrijevega nitrita naredil nitroetan.

Ali bo ta metoda delovala za izdelavo P2NP in P2P?
 

MisterAnonymous

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@GhostChemist zakaj v videoposnetku namesto n-butilamina uporabi cikloheksamin in ne IPA?
 

HIGGS BOSSON

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Glede na razpoložljivost lahko uporabite različne katalizatorje: butilamin, cikloheksilamin, amonijev acetat (suh). Alkohol je potreben le na stopnji čiščenja, za reakcijo kondenzacije so potrebni le nitroetan, benzaldehid, katalizator in ocetna kislina.
 

MisterAnonymous

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Hvala za pojasnilo, vendar živim v Evropi in vse te kemikalije so zakonite in na voljo na Poljskem, zato bomo zdaj videli, kateri katalizator je najcenejši! :)
 

ActionAyi

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I believe IPA is just the solvent you can use any organic solvent with a similar polarity like ethanol or sonething else
 

ActionAyi

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Would it be possible if using triethylamine instead of n-butylamine ?
 

Joshua abs

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Is there any alternatives for nitroethane
 

HIGGS BOSSON

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No. Nitroethane is legal in many countries, including Europe, it can also be obtained independently, but unfortunately, laboratory synthesis is not easy or expensive. In industry, nitroethane is easily produced by paraphase nitration of propane.
 
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