Carboxylic Acids and their Derivatives - Result Question 56
42. Complete the following sequence of reactions with appropriate structures
$ \begin{aligned} CH _3-CH _2-COOH \xrightarrow[Br_2]{\text {Red-P}} A \\ A \xrightarrow[\text { (ii) } H^{+} ]{\text{(i) Alc. KOH (excess)}} B \end{aligned} $
$(1995,2 M)$