Syntese af 4'-methylpropiophenon fra toluen ved Friedel-Crafts reaktion (1 kg+ skala)

CryoThio

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Er der andre Lewis-syrer, der kan bruges til at syntetisere 4mmc fra toluen?

Aluminiumchlorid er svært at få fat i for mig.
 

AgamemnonFromTroy

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Ja, for eksempel jernklorid (FeCl3) og zinkklorid (ZnCl3), men reaktionen vil ske langsommere end ved brug af aluminiumklorid.
 

CryoThio

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Er zink- og jernkloriderne vandfri?

Hvilken af de to giver den hurtigste reaktion?
 

Germanium

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Hvordan syntetiserer man 3-methylpropiophenon?
 

oneimone

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Ved små synteser er forholdet mellem substraterne det samme 3:1:1,5, eller er der noget, der ændrer sig?
 

TucoSalamanca.

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i denne syntese har jeg kun et varmelegeme ballonblander kan jeg ikke bruge et vandbad, og hvor mange grader bør ikke overskrides, når vi tilsætter propinolchlorid
 

TucoSalamanca.

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Denne syntese er AlCl3.6H2O, kan jeg bruge det som katalysator?
 

CryoThio

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Jeg er ret sikker på, at det skal være vandfri aluminiumklorid.

Intet vand overhovedet. Problemet er, at man ikke kan tørre aluminiumklorid ved at opvarme det, tror jeg.

Dobbelttjek dog dette
 

TucoSalamanca.

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Jeg vil bruge zinkchlorid i denne syntese Hvor mange g zinkchlorid skal jeg bruge i denne syntese?
 

G.Patton

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Samme molære forhold som for AlCl3
 

TucoSalamanca.

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Hvor mange grader må man ikke overskride, når man tilsætter propinolchlorid?
 

NovicechemistEU

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**Propionyl Chloride (CH₃CH₂COCl):**

* Molar mass: 109.5 g/mol
* Number of moles: 1000 g / 109.5 g/mol ≈ 9.13 mol

Toluene (C₇H₈):** **2.

* Molar mass: 92 g/mol
* Density (25°C): ≈ 0.87 g/mL
* Mass: 3000 mL * 0.87 g/mL = 2610 g
* Number of moles: 2610 g / 92 g/mol ≈ 28.4 mol

**Aluminum Chloride (AlCl₃):**3.

* Molar mass: 133.5 g/mol
* Number of moles: 1500 g / 133.5 g/mol ≈ 11.2 mol


**Mole Ratios:**

Now, let's determine the mole ratios by proportioning the mole numbers to each other. Let's ratio according to the smallest number of moles (here propionyl chloride):

** **Propionyl Chloride : Toluene : AlCl₃**
* **9.13 mol : 28.4 mol : 11.2 mol**
* **Molar ratios - 1 : 3.11 : 1.23**

This implies a ratio of approximately 1:3:1.
 

NovicechemistEU

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Boiling points of toluene and 4'-methylpropiophenone under vacuum damper pressure.
20 mmHg.
Toluene 16.55 degrees.
4'-methylpropiophenone 123-126 degrees
 
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