CH3CH2COOH arrow red PCl2Α oversetalc . KOH arrow Β What is B ?

Question

CH3CH2COOH arrow red PCl2Α oversetalc . KOH arrow Β What is B ? (A) CH3CH2COCl (B) CH3CH2CHO (C) ClCH2CH2COOH (D) CH2=CHCOOH

Tardigrade Admin · Accepted Answer

1st step is Hell-Volhard Zelinsky reaction, halogenation of carboxylic acid at α​ - textC . In the second step beta elimination reaction takes place. <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/03641aa4547792995223e5be79b7e8cd-.png" />

Q. $C H_{3} C H_{2} COO H \to_{re d P}^{C l_{2}} A \to a l c . K O H B$
What is B ?

CH₃CH₂COCl

CH₃CH₂CHO

ClCH₂CH₂COOH

CH₂=CHCOOH

1st step is Hell-Volhard Zelinsky reaction, halogenation of carboxylic acid at $α - C$ . In the second step beta elimination reaction takes place.

Q. CH3​CH2​COOH→redPCl2​​A→alc.KOHB What is B ?

CH3CH2COCl

CH3CH2CHO

ClCH2CH2COOH

CH2=CHCOOH