Question

Wittig reaction : $C{H}_3-\stackrel{C{H}_3}{\stackrel{|}{C}}=O$ $C{H}_2=PP{h}_3\stackrel{DMSO}{\to }C{H}_3-\stackrel{C{H}_3}{\stackrel{|}{C}}=C{H}_2+P{h}_{3}P=O$

Answer 1

Properties of Acetic Anhydride

$R{x}^n$ with A

$R-\underset{O}{\underset{||}{C}}-O-\underset{O}{\underset{||}{C}}-R\stackrel{R^{\prime }OH}{\to }R-COOH+RCOOR$

$\stackrel{N{H}_3}{\to }RCON{H}_2+RCOOH$

$\stackrel{RN{H}_2}{\to }RCO\underset{R}{\underset{|}{N}}H+RCOOH$

$\underset{\left(ii\right)H_{2}O}{\overset{LiAl{H}_4}{\to }}2RC{H}_{2}OH$

$\Rightarrow$ Perkin condensation

ref. image