Home
Class 12
CHEMISTRY
How many of the following alkyl halides ...

How many of the following alkyl halides would react by `S_(N^(1))` mechanism?
`CH_(3)Br,CH_(3)CH_(2)Br,CH_(3)CH_(2)CH_(2)I,(CH_(3))_(3)CBr,BrCH_(3)CH=CH_(2),C_(6)H_(5)CH_(2)Br,(CH_(3))_(3)C CH_(2)Br,C_(6)H_(5)CHBrCH_(3),CH_(3)CH=CHCH_(2)Cl`.
.

Text Solution

Verified by Experts

Only tertiary alkyl halides and benzyl halides react by following `S_(N^(1))` mechanism because a carbocation intermediate is formed in the slow step. There are five in this case:
`(CH_(3))_(3)CBr,BrCH_(2)CH=CH_(2),C_(6)H_(5)CH_2Br,C_(6)H_(5)CHBrCH_(3) and CH_(3)CH=CHCH_(2)Cl`.
Promotional Banner

Topper's Solved these Questions

  • HALOALKANES AND HALOARENES

    DINESH PUBLICATION|Exercise Matrix|1 Videos

  • HALOALKANES AND HALOARENES

    DINESH PUBLICATION|Exercise Brain storming multiple choice questions|11 Videos

  • HALOALKANES AND HALOARENES

    DINESH PUBLICATION|Exercise Straight Objective type|28 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    DINESH PUBLICATION|Exercise Brain Storming Multiple Chocie Questions|7 Videos

  • HYDROCARBONS

    DINESH PUBLICATION|Exercise All Questions|493 Videos

Similar Questions

Explore conceptually related problems

Arrange the following halides in order increasing S_(N^(2)) reactivity CH_(3)Cl,CH_(3)Br,CH_(3)CH_(2)Cl,(CH_(3))_(2)CHCl .

Predict the order of reactivity of the following compounds in dehydrohalogenation: (a) CH_(3)CH_(2)CH_(2)CH_(2)Cl, (CH_(3))_(2)CHCH_(2)Cl, (CH_(3))_(2)CH-CH_(2)Br, CH_(3)CH(Br)CH_(2)CH_(3), (CH_(3))_(3)C-Br (b) CH_(3)CH(Br)CH_(3), CH_(3)CH_(2)CH_(2)Br, (CH_(3))_(2)CHCH_(2)Br, (CH_(3))_(3)C CH_(2)Br

Arrange the following in increasing order of their expected S_(N)1 reactivity : (i) CH_(3)CH(Br)CH_(3), CH_(3)CH_(2)Br, CH_(2)=CHBr, CH_(2)=CHCH(Br)CH_(3) (ii) ClCH_(2)CH=CHCH_(2)CH_(3), CH_(3)C(Cl)=CHCH_(2)CH_(3), CH_(3)CH=CHCH_(2)CH_(2)Cl, CH_(3)CH=CHCH(Cl)CH_(3) (iii) (CH_(3))_(3)C Cl, C_(6)H_(5)C(CH_(3))_(2)Cl,(CH_(3))_(2)CHCl, CH_(3)CH_(2)CH_(2)Cl

Iupac name is CH_(3)-CH_(2)-C(Br)_2-CH_2-CH_(2)-CH_2-Cl

Name the following halides according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides: (i) (CH_(3))_(2)CHCH(Cl)CH_(3) , (ii) CH_(3)CH_(2)CH(CH_(3))CH(C_(2)H_(5))Cl (iii) CH_(3)CH_(2)C(CH_(3))_(2)CH_(2)I , (iv) (CH_(3))_(3)C CH_(2)CH(Br)C_(6)H_(5) (v) CH_(3)CH(CH_(3))CH(Br)CH_(3) , (vi) CH_(3)C(C_(2)H_(5))_(2)CH_(2)Br (vii) CH_(3)C(Cl)(C_(2)H_(5))CH_(2)CH_(3) , (viii) CH_(3)CH=C(Cl)CH_(2)CH(CH_(3))_(2) (ix) CH_(3)CH=CHC(Br)(CH_(3))_(2) (x) p-ClC_(6)H_(4)CH_(2)CH(CH_(3))_(2) (xi) m-ClCH_(2)C_(6)H_(4)CH_(2)C(CH_(3))_(3) , "(xii)" o-Br-C_(6)H_(4)CH(CH_(3))CH_(2)CH_(3)