amine has nh2 group which is a base.in friedel craft alkylation we use alcl3 which is Lewis acid.thus amine reacts with alcl2 to form salt and no alkylation reaction occurs..
hope it helps
2R–X + 2Na → R–R + 2NaX
2CH3—Cl + 2Na → CH3—CH3 + 2NaCl
2) Friedel-crafts alkylation reaction
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Friedel-Craft's alkylation reaction : When an aromatic hydrocarbon is treated with an acid chloride in the presence of anhydrous aluminium chloride, and allyl hydrocarbon is produced.
This reaction is called Friedel-Craft's reaction.
Wurtz reaction : A reaction in which two alkyl halides react with sodium metal in dry ether solution to form a higher alkane is called Wurtz reaction.
Friedel-Craft's alkylation reaction : When an aromatic hydrocarbon is treated with an acid chloride in the presence of anhydrous aluminium chloride, and allyl hydrocarbon is produced. This reaction is called Friedel-Craft's reaction.
Acc. To me,
In this rxn halogen add with alkene in presence of sunlight (hv) to give haloalkane
In this rxn methyl grp(always alkyl grp) add with benzene (in presence of AlCl3)at Ortho or para position to form toluence or other comp.
In this rxn Two haloalkane react with Sodium in presence of dry ether to give alkane and Salt.
I hope it help
AlCl3 is a strong LUWIS ACID.SO,it rips the halide from alkyl halide forming an AlCl3X- alkyl cation/acyliumcation complex.
C6H6 + R-Cl →AlCl3→ C6H5-R + HCl
Explanation:Friedel-Crafts Alkylation of Benzene :Reaction type: Electrophilic Aromatic Substitution Overall transformation : Ar-H to Ar-R Named after Friedel and Crafts who discovered the reaction in 1877. Reagent : normally the alkyl halide (e.g. R-Br or R-Cl) with aluminum trichloride, AlCl3, a Lewis acid catalyst. Electrophilic species : the carbocation (i.e. R +) formed by the "removal" of the halide by the Lewis acid catalyst The carbocation then attacks the benzene ring here a H is taken by the Cl [anion] formed the carbocation formed attacks the benzene ring there The reactive electrophile, the carbocation is prone to rearrangement to a more stable carbocation which will then undergo the alkylation reaction. =>The halide must be an alkyl halide. Vinyl or aryl halides do not react as their intermediate carbocations are too unstable.
Friedal - Crafts Acylation. This electrophllic aromatic substitution allow the synthesis of monocylated products from the reaction between arenes and aryl chlorides or anhydides. The products are decictived and do not undergo a second substitution
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The AlCl3 is regenerated, and HCl is a byproduct.
The Friedel-Crafts reaction is also promoted by AlCl3. In Friedel-Crafts acylation, the product is an aromatic ketone, and the byproduct is HCl.
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