B ,600 , ,C H   C H   C H BR    C H OH    C H NO O...

Câu 4: Đáp án : B

,600

,

,

C H

  

C H

  

C H Br

   

_



C H OH

   



C H NO OH

   

^

X

=> Đáp án B

2

4

2

2

^C

^o

6

6

_{Br Fe}

^t

^o

/

6

5

_NaOHd

^{t p}

^o

6

5

^{H SO t}

_{HNO d}

^o

6

2

(

2 3

)

^{Fe HCl}

2

3