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JEE • Chemistry

Alcohol

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reaction

SN1 Conversion to Alkyl Halide

The Alcohol section begins with an SN1 conversion of alcohol to alkyl halide through protonation and water loss.

R−OH→H+R−OH2+→−H2OR+→X−R−XR-OH\xrightarrow{H^+}R-OH_2^+\xrightarrow{-H_2O}R^+\xrightarrow{X^-}R-X
alcohol to alkyl halide
R-OHR-OH2+R-XH+-H2O, X-SN1 route; R may rearrange

Notes

  • RR may rearrange.

  • Reactivity of HX: HI>HBr>HClHI>HBr>HCl.

  • Reactivity of ROH: allyl, benzyl >3∘>2∘>1∘>3^\circ>2^\circ>1^\circ.