`underset("Ethanol")(CH_(3)CH_(2)OH)underset("(Oxidation)")overset(K_(2)Cr_(2)O_(7)//H_(2)SO_(4))(rarr)underset("Ethanal")(CH_(2)-overset(O)overset(||)(C)-H)overset(CH_(3)MgBr)(rarr)[CH_(3)-underset(CH_(3))underset(|)overset(" "OMgBr)overset(|)(C)-H]underset(H^(+))overset(H_(2)O)(rarr)underset("Propan-2-ol")(CH_(3)-underset(CH_(3))underset(|)overset(OH)overset(|)(C)-H)`
