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Groove synthesis

From EverybodyWiki Bios & Wiki



The groove synthesis is the synthesis of alkyl halide from alcohols via treatment at high temperatures with hydrogen halide in the presence of anhydrous zinc chloride as a catalyst. Concentrated HCl + anhydrous ZnCl2 is known as Lucas reagent.


           R–OH  +  HX ————ZnCl2————>    R-X  +  H2O
                           300°C     

Reactivity order: HI > HBr > HCl > HF 3° > 2° > 1° > MeOH.

2° and 3° alcohols undergo SN1; 1° and MeOH undergo SN2 mechanism.



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