How will you bring about the following conversions - Ethanol to but - 1 - yne Ethane to bromoethane Propene to-1 - nitropropane Toluene to benzyl alcohol Propene to propyne Ethanol to ethyl fluoride Bromomethane to propanone But-1-ene to but-2-ene l - chlorobutane to n- octane Benzene to biphenyl

EthanolCH_3 CH_2 OHChloroethaneCH_3 CH_2ClBut 1 yneCH_3 CH_2 C ≡ CH [CH ≡ CH + NaNH_2 CH ≡ CNa + NH_3] EthaneCH_3 CH_3Br_2/(hv/520 670 K)BromoethaneCH_3 ...

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Byju's Answer

Standard XII

Chemistry

Wurtz Halide Reaction

How will you ...

Question

How will you bring about the following conversions ?

(i) Ethanol to but - 1 - yne

(ii) Ethane to bromoethane

(iii) Propene to 1 - nitropropane

(iv) Toluene to benzyl alcohol

(v) Propene to propyne

(vi) Ethanol to ethyl fluoride

(vii) Bromomethane to propanone

(viii) But-1-ene to but-2-ene

(ix) l - chlorobutane to n- octane

(x) Benzene to biphenyl

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Solution

(i) Ethanol to but -1-yne
$C H_{3} - C H_{2} - O H + S O {C l}_{2} p y r i d i n e - ----- \to C H_{3} - C H_{2} - C l + S O_{2} ↑ + H C l ↑$
ethanol ethyl chloride
$H C \equiv C H + N a N H_{2} l i q . N H_{3} - ----- \to H C \equiv C^{-} {N a}^{+}$
acetylene sodium acetylide
$C H_{3} - C H_{2} - C l + H C \equiv C^{-} {N a}^{+} ⟶ C H_{3} - C H_{2} - C \equiv C H + N a C l$
but-1-yne
(ii) Ethane to bromoethane
$C H_{3} - C H_{3} + B r_{2} U V l i g h t - ----- \to C H_{3} C H_{2} B r a l c . K O H - ------- \to$
ethane $C H_{2} = C H_{2} {B r}_{2} - - \to B r - C H_{2} C H_{2} - B r$

$B r - C H_{2} - C H_{2} - B r a l c . K O H - ------- \to C H_{2} = C H B r$
bromo ethene
(iii) Propene to 1 - nitropropane
$C H_{3} C H = C H_{2} + H B r p e r o x i d e - ----- \to C H_{3} C H_{2} C H_{2} B r A g N O_{2} - ---- \to C H_{3} C H_{2} C H_{2} N O_{2} + A g B r$
1-nitro propane
(iv) Toluene to benzyl alcohol
$C_{6} H_{5} - C H_{3} + {C l}_{2} U V l i g h t - ----- \to C_{6} H_{5} - C H_{2} C l N a O H - ---- \to C_{6} H_{5} - C H_{2} O H + N a C l$ toluene benzyl alcohol

(v) Propene to propyne
$C H_{3} C H = C H_{2} + {B r}_{2} C {C l}_{4} - -- \to C H_{3} C H (B r) - C H_{2} (B r) N a N H_{2} - ----- \to C H_{3} C \equiv C H$
propene propyne
(vi) Ethanol to ethyl fluoride
$C H_{3} C H_{2} O H + H C l Z n {C l}_{2} - --- \to C H_{3} - C H_{2} - C l + H_{2} O$
ethyl alcohol ethyl chloride
$C H_{3} C H_{2} - C l + A g F ⟶ C H_{3} C H_{2} - F (S w a r t s r e a c t i o n)$
ethyl fluoride
(vii) Bromomethane to propanone

(viii) But-1-ene to but-2-ene
$C H_{3} C H_{2} C H = C H_{2} H B r - -- \to C H_{3} C H_{2} C H (B r) - C H_{3} a l c . K O H - ------- \to$
$C H_{3} C H = C H - C H_{3}$ But-1-ene but-2-ene

(ix) 1 - chloro-butane to n- octane
Wurtz synthesis
$2 C H_{3} C H_{2} C H_{2} - C l + 2 N a d r y e t h e r - ------ \to C H_{3} {(C H_{2})}_{6} C H_{3} + 2 N a C l$
1 chloro-butane n-octane
(x) Benzene to biphenyl
Wurtz-Fittig reaction

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Similar questions

How will you bring about the following conversions?

(i) Ethanol to but-1-yne

(ii) Ethane to bromoethene

(iii) Propene to 1-nitropropane

(iv) Toluene to benzyl alcohol

(v) Propene to propyne

(vi) Ethanol to ethyl fluoride

(vii) Bromomethane to propanone

(viii) But-1-ene to but-2-ene

(ix) 1-Chlorobutane to n-octane

(x) Benzene to biphenyl.

How the following conversions can be carried out?

(i) Propene to propan-1-ol

(ii) Ethanol to but-1-yne

(iii) 1-Bromopropane to 2-bromopropane

(iv) Toluene to benzyl alcohol

(v) Benzene to 4-bromonitrobenzene

(vi) Benzyl alcohol to 2-phenylethanoic acid

(vii) Ethanol to propanenitrile

(viii) Aniline to chlorobenzene

(ix) 2-Chlorobutane to 3, 4-dimethylhexane

(x) 2-Methyl-1-propene to 2-chloro-2-methylpropane

(xi) Ethyl chloride to propanoic acid

(xii) But-1-ene to n-butyliodide

(xiii) 2-Chloropropane to 1-propanol

(xiv) Isopropyl alcohol to iodoform

(xv) Chlorobenzene to p-nitrophenol

(xvi) 2-Bromopropane to 1-bromopropane

(xvii) Chloroethane to butane

(xviii) Benzene to diphenyl

(xix) tert-Butyl bromide to isobutyl bromide

(xx) Aniline to phenylisocyanide

Q. How the following conversions can be carried out?
(i) Propene to propan-1-ol (ii) Ethanol to but-1-yne
(iii) 1-Bromopropane to 2-bromopropane (iv) Toluene to benzyl alcohol
(v) Benzene to 4-bromonitrobenzene (vi) Benzyl alcohol to 2-phenylethanoic acid
(vii) Ethanol to propanenitrile (viii) Aniline to chlorobenzene
(ix) 2-Chlorobutane to 3, 4-dimethylhexane (x) 2-Methyl-1-propene to 2-chloro-2-methylpropane
(xi) Ethyl chloride to propanoic acid (xii) But-1-ene to n-butyliodide
(xiii) 2-Chloropropane to 1-propanol (xiv) Isopropyl alcohol to iodoform
(xv) Chlorobenzene to p-nitrophenol (xvi) 2-Bromopropane to 1-bromopropane
(xvii) Chloroethane to butane (xviii) Benzene to diphenyl
(xix) tert-Butyl bromide to isobutyl bromide (xx) Aniline to phenylisocyanide

Q. How do you convert:
(i) Chlorobenzene to biphenyl
(ii) Propene to 1-iodopropane
(iii) 2-bromobutane to but-2-ene

How will you bring about the following conversions in not more than two steps?

(i) Propanone to Propene

(ii) Benzoic acid to Benzaldehyde

(iii) Ethanol to 3-Hydroxybutanal

(iv) Benzene to m-Nitroacetophenone

(v) Benzaldehyde to Benzophenone

(vi) Bromobenzene to 1-Phenylethanol

(vii) Benzaldehyde to 3-Phenylpropan-1-ol

(viii) Benazaldehyde to α-Hydroxyphenylacetic acid

(ix) Benzoic acid to m- Nitrobenzyl alcohol

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Wurtz Halide Reaction

Standard XII Chemistry

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