CH3-CH2-CH(=O) + C2H5MgBr = CH3-CH2-CH(C2H5)-O-MgBr CH3-CH2-CH(C2H5)-O-MgBr + H2O/H+ = CH3-CH2-CH(OH)-CH2-CH3 + MgOHBr CH3-CH2-CH(OH)-CH2-CH3 + HBr/t = CH3-CH2-CH(Br)-CH2-CH3 + H2O CH3-CH2-CH(Br)-CH2-CH3 + 2NH3 = CH3-CH2-CH(NH2)-CH2-CH3 + NH4Br CH3-CH2-CH(C2H5)-NH-C(=O)-CH3 + HCl