Method B. Using the same amounts and proportions of reactants as in Method A, the hypophosphorous acid wadded to the benzene solution of dodecylamine, followed by addition of benzaldehyde. The mixture was heated under reflux until the calculated amount of water had separated. After cooling, the viscous and turbid reaction mixture waa diluted with 3 volumes of ether and worked up as described in Method A. Only 76 g (75% yield) of ...
