Question

How will you prepare
(a) Ethanal from ethanol ?
(b) Propanone from Grignards reagent ?

Answer 1

a) $C{H}_{3}C{H}_{2}OH\underset{H^{+}}{\overset{{C{r}_2{O}_7}^{2-}}{\to }}C{H}_{3}CHO$

b)$C{H}_{3}C\equiv N\underset{ii)H_{2}O}{\overset{i)C{H}_{3}MgBr}{\to }}C{H}_{3}COC{H}_3$