Cho sơ đồ chuyển hóa sau :(egin{array}{l}(1){C_4}{H_6}{O_2}left( M ight) + NaOH o left( A ight) + left( B ight)\(2)left( B

Câu hỏi :

Cho sơ đồ chuyển hóa sau :\(\begin{array}{l} (1){C_4}{H_6}{O_2}\left( M \right) + NaOH \to \left( A \right) + \left( B \right)\\ (2)\left( B \right) + AgN{O_3} + N{H_3} + {H_2}O \to \left( F \right) \downarrow + Ag + N{H_4}N{O_3}\\ (3)\left( F \right) + NaOH \to \left( A \right) \uparrow + N{H_3} + {H_2}O \end{array}\)

A. HCOO(CH2)=CH2  

B. CH3COOCH=CH2

C. HCOOCH=CHCH3           

D. CH2=CHCOOCH3

* Đáp án

B

* Hướng dẫn giải

\(\begin{array}{l} (1)C{H_3}{\rm{COOCH = C}}{{\rm{H}}_2}\left( M \right) + NaOH \to C{H_3}{\rm{COONa}}\left( A \right) + C{H_3}CHO\left( B \right)\\ (2)C{H_3}CHO\left( B \right) + AgN{O_3} + N{H_3} \to C{H_3}{\rm{COON}}{{\rm{H}}_4}\left( F \right) + Ag \downarrow + N{H_4}N{O_3}\\ (3)C{H_3}{\rm{COON}}{{\rm{H}}_4}\left( F \right) + NaOH \to C{H_3}{\rm{COONa}}\left( A \right) + N{H_3} + {H_2}O \end{array}\)

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