Question
Compounds $P$ and $R$ in the following reaction $CH_3CHO \xrightarrow{(ii)\ H_3O^+} CH_3MgBr \xrightarrow{\text{heat},\ (\text{conc})\ H_2SO_4} Q \xrightarrow{\substack{(i)\ B_2H_6 \\ (ii)\ H_2O_2,\ OH^-}} R$
Compounds $P$ and $R$ in the following reaction $CH_3CHO \xrightarrow{(ii)\ H_3O^+} CH_3MgBr \xrightarrow{\text{heat},\ (\text{conc})\ H_2SO_4} Q \xrightarrow{\substack{(i)\ B_2H_6 \\ (ii)\ H_2O_2,\ OH^-}} R$