Which sequence represents the best synthesis of 4- isopropylbenzo… - Vidyadip

MCQ

Which sequence represents the best synthesis of $4-$ isopropylbenzonitrile ?

A
$1.$ Benzene $+ (CH_3)_2CHCl,AlCl_3;$

$2.\, Br_2, FeBr_3;$

$3.\, KCN$
B
$1.$ Benzene $+ (CH_3)_2CHCl,AlCl_3;$

$2.\, HNO_3 , H_2SO_4;$

$3.\, Fe, HCl,;$

$4.\, NaOH $

$5.\, NaNO_2, HCl, H_2O$
✓
$1.$ Benzene $+(CH_3)_2CHCl, AlCl_3;$

$2.\, HNO_3 , H_2SO_4;$

$3.\, Fe, HCl;$

$4.\, NaNO_2 /HCl $

$5.\, KCN$
D
$1.$ Benzene $+ HNO_3 , H_2SO_4;$

$2.\, (CH_3)_2CHCl, AlCl_3;$

$3.\, Fe, HCl;$

$4.\, NaNO_2, HCl, H_2O;$

$5.\, CuCN$

✓

Answer

Correct option: C.

$1.$ Benzene $+(CH_3)_2CHCl, AlCl_3;$

$2.\, HNO_3 , H_2SO_4;$

$3.\, Fe, HCl;$

$4.\, NaNO_2 /HCl $

$5.\, KCN$

c

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