Among the following sets of reaction which one produces anisole?
A
CH3CHO;RMgX
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B
C6H5OH;NaOH,CH3I
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C
C6H5OH;neutralFeCl3
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D
C6H5−CH3;CH3COCl;AlCl3
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Solution
The correct option is AC6H5OH;NaOH,CH3I Among the following sets of reaction, the reaction B produces anisole:
(A) Acetaldehyde reacts with grignards reagent followed by acidic hydrolysis to form secondary alcohol.
(B) Phenol reacts with NaOH to form sodium phenoxide. It reacts with methyl iodide in SN2 reaction to form anisole (methoxy benzene). C6H5−OH+NaOH→C6H5−ONaCH3I−−−→SNC6H5−OCH3(Anisole) (Williamson's synthesis)
(C) Phenol reacts with neutral ferric chloride solution to form violet colored complex. 3C6H5OH+neutralFeCl3→(C6H5O)3FeViolet colour complex+3HCl.
(D) Toluene reacts with acetyl chloride in presence of anhydrous AlCl3 to form p-methyl acetophenone. This is friedel craft's reaction. C6H5−CH3+CH3COCl+AlCl3→p−CH3−C6H4−COCH3Para- methyl aceto phenone