Ncert Exercises & Solutions

10.1 Name the following halides according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:

(i) (CH3)2CHCH(Cl)CH3

(ii) CH3CH2CH(CH3)CH(C2H5)Cl

(iii) CH3CH2C(CH3)2CH2I

(iv) (CH3)3CCH2CH(Br)C6H5

(v) CH3CH(CH3)CH(Br)CH3

(vi) CH3C(C2H5)2CH2Br

(vii) CH3C(Cl)(C2H5)CH2CH3

(viii) CH3CH=C(Cl)CH2CH(CH3)2

(ix) CH3CH=CHC(Br)(CH3)2

(x) p-ClC6H4CH2CH(CH3)2

(xi) m-ClCH2C6H4CH2C(CH3)3

(xii) o-Br-C6H4CH(CH3)CH2CH3

(i) $C H_{2} C H$
$| |$
$\overset{4}{C} H_{3} — \overset{3}{C} H — \overset{2}{C} H — \overset{l}{C} H_{3}$

2−Chloro−3−methylbutane
(Secondary alkyl halide)
(ii) $\overset{6}{C} H_{3} — \overset{5}{C} H — \overset{4}{C} H — \underset{|}{C}$
$Cl 3 H — \overset{2}{C} H_{2} — \overset{l}{C} H_{3}$
3−Chloro−4−methyhexane
(Secondary alkyl halide)

(iii) $C H_{3}$
$|$
$\overset{4}{C} H_{3} — \overset{3}{C} H_{2} — \overset{l}{C — C H_{2}} — l$
$|$
$C H_{3}$

1−Iodo−2, 2 −dimethylbutane
(Primary alkyl halide)
(iv)
$C H_{3}$
$\overset{4}{C} H_{3} — \overset{|}{\overset{3}{C} — \overset{2}{C} H_{2}} — \overset{1}{C H}$
$|$
$C H_{3}$
1−Bromo−3, 3−dimethyl−1−phenylbutane
(Secondary benzyl halide)
(v) $C H_{3} B r$
$| |$
$\overset{4}{C} H_{3} — \overset{3}{C} H — \overset{2}{C} H — \overset{1}{C} H_{3}$
2−Bromo−3−methylbutane
(Secondary alkyl halide)
(vi) $C H_{3} — \overset{2}{C} — \overset{1}{C} H_{2} — B r$
$|$
$\overset{3}{C} H_{2}$
$|$
$\overset{4}{C} H_{3}$
1−Bromo−2−ethyl−2−methylbutane
(Primary alkyl halide)

(Vii) $C l$
$|$
$C H_{3} — \overset{3}{C} — \overset{4}{C} H_{2} — \overset{5}{C} H_{3}$
$|$
$\overset{2}{C} H_{2}$
$|$
$\overset{1}{C} H_{3}$

3−Chloro−3−methylpentane

(Tertiary alkyl halide)

(viii) $C l C H_{3}$
$| |$
$\overset{1}{C} H_{3} — \overset{2}{C} H = \overset{3}{C} \overset{4}{— C} H_{2} — \overset{5}{C} H \overset{6}{C} H_{3}$

3−Chloro−5−methylhex−2−ene
(Vinyl halide)

(ix) $B r$
$|$
$\overset{1}{C} H_{3} — \overset{2}{C} H = \overset{3}{C H} \overset{4}{— C} — \overset{5}{C} H_{3}$
$|$
$C H_{3}$

4−Bromo−4−methylpent−2−ene

(Allyl halide)

(x)

1−Chloro−4−(2−methylpropyl) benzene

(Aryl halide)

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