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Which of the following reagent(s) can be...

Which of the following reagent(s) can be used for protection of amine`(-NH_2)` group of aniline during electrophilic aromatic substitution reaction and that too without changing orientational effect?

A

`(CH_3 CO)_2 O`

B

`C_6 H_5 SO_2 Cl`

C

`KMnO_4//OH`

D

`C_6 H_5 COCl`

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The correct Answer is:
A, B, D
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