It was found that the binary system reacts with benzaldehyde. Al- though, in reality, no hydrobenzoin to correspond to compound (I) is obtainable on the hydrolysis of the reaction mixture, there is nonetheless every reason to assume that the reaction indicated actually represents the first stage of the process. The disappearance of this intermediate product (I) is brought about by reactions subsequent to that given as the first step (Equation 1). We found, namely, that this ...