WURTZ REACTION VS FITTING VS WURTZ FITTING REACTION

WURTZ REACTION VS FITTING VS WURTZ FITTING REACTION
Wurtz reaction is coupling of haloalkanes using sodium metal in solvent like dry ether
2R−X+2Na→R−R+2Na+X−(1)
The reaction consists of a halogen-metal exchange involving the free radical species R• (in a similar fashion to the formation of a Grignard reagent and then the carbon-carbon bond formation in a nucleophilic substitution reaction.)
One electron from the metal is transferred to the halogen to produce a metal halide and an alkyl radical.
R−X+M→R⋅+M+X−(2)
The alkyl radical then accepts an electron from another metal atom to form an alkyl anion and the metal becomes cationic. This intermediate has been isolated in a several cases.
R⋅+M→R−M+(3)
The nucleophilic carbon of the alkyl anion then displaces the halide in an SN2 reaction, forming a new carbon-carbon covalent bond.
R−M++R−X→R−R+M+X−(4)
Wurtz Fittig Reaction
Wurtz-Fittig reaction is essential in forming a carbon-carbon bond and chain elongation. It was discovered independently by Charles Adolphe Wurtz in 1855 and by Wilhelm Rudolph Fittig in 1860 as the Wurtz Reaction and Fittig reactions, respectively. Wurtz reaction was developed as a coupling reaction of two alkyl halides to elongate the alkane chain, while the Fittig reaction was developed as a coupling reaction of two aryl halides. Wurtz-Fittig reaction involves coupling between an alkyl and aryl halides instead of only alkyl or aryl halides.