Question

Write a short note on (1) wurtz reaction (2) friedel-crafts alkylation

Answer 1

(1) Wurtz reaction means to convert haloalkanes to hydrocarbons in the presence of Na and dry ether.

Eg: 2(CH3CH2Cl) + 2Na -----> CH3CH2CH2CH3 + 2NaCl

(2) Mainly it is a reaction between aryl compounds and halogen compounds in the presence of anhyd.AlCl3

Eg: C6H6 + CH3Cl -------> C6H5(CH3) + HCl

Answer 2

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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.