Some alkylhalides undergo substitution whereas some undergo elimination reaction on treatment with bases. Discuss the structural features of alkyl halides with the help of examples which are responsible for this difference.

This is a long answer type question as classified in NCERT Exemplar

The structure of the alkyl halide as well as the chemicals used in the reaction dictate whether it undergoes substitution or elimination. The reactivity of alkyl halides to substitution processes can be examined to better understand their structural characteristics. The S_N² mechanism, which involves cleavage of the halide from the carbon atom and simultaneous attachment of the attacking nucleophile, is preferred by primary alkyl halides for substitution reactions.

Tertiary halides, on the other hand, go through an elimination process due to the production of stable carbo

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This is a long answer type question as classified in NCERT Exemplar

The structure of the alkyl halide as well as the chemicals used in the reaction dictate whether it undergoes substitution or elimination. The reactivity of alkyl halides to substitution processes can be examined to better understand their structural characteristics. The S_N² mechanism, which involves cleavage of the halide from the carbon atom and simultaneous attachment of the attacking nucleophile, is preferred by primary alkyl halides for substitution reactions.

Tertiary halides, on the other hand, go through an elimination process due to the production of stable carbocation. Tertiary halides also prefer to go through the S_N¹ reaction, which is a two-step reaction including the creation of a stable carbocation once the halide atom is cleaved. Depending on the solvent and temperature circumstances, secondary halides exhibit intermediate reactivity in both elimination and substitution processes.

The given reaction is for a primary alkyl halide undergoing S_N² substitution.

The provided reaction is for an S_N² substitution of a tertiary alkyl 

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<p><span data-teams="true">This is a long answer type question as classified in NCERT Exemplar</span></p><p>The structure of the alkyl halide as well as the chemicals used in the reaction dictate whether it undergoes substitution or elimination. The reactivity of alkyl halides to substitution processes can be examined to better understand their structural characteristics. The <strong>S_N²</strong> mechanism, which involves cleavage of the halide from the carbon atom and simultaneous attachment of the attacking nucleophile, is preferred by primary alkyl halides for substitution reactions.</p><p>Tertiary halides, on the other hand, go through an elimination process due to the production of stable carbocation. Tertiary halides also prefer to go through the <strong>S_N¹</strong> reaction, which is a two-step reaction including the creation of a stable carbocation once the halide atom is cleaved. Depending on the solvent and temperature circumstances, secondary halides exhibit intermediate reactivity in both elimination and substitution processes.</p><p>The given reaction is for a primary alkyl halide undergoing <strong>S_N²</strong> substitution.</p><p>The provided reaction is for an <strong>S_N²</strong>substitution of a tertiary alkyl&nbsp;</p><div><div><picture><source srcset="https://images.shiksha.com/mediadata/images/articles/1747112724phpPuRMcB_480x360.jpeg" media=" (max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/articles/1747112724phpPuRMcB.jpeg" alt="" width="779" height="438"></picture></div></div><div><div><picture><source srcset="https://images.shiksha.com/mediadata/images/articles/1747112863phpuxaPRt_480x360.jpeg" media=" (max-width: 500px)"><img src="https://images.shiksha.com/mediadata/images/articles/1747112863phpuxaPRt.jpeg" alt="" width="549" height="56"></picture></div></div>

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