58 ELECTROLYSIS AND ELECTROS YN THESIS 



dence that a small portion of the acid had undergone 

 oxidation. 



The potassium salt of the mono-ethyl ester of 

 phthalic acid, when electrolyzed by Brown and 

 Walker, 1 became dark-colored and a resinous sub- 

 stance was formed, but the isolation of any new 

 electrolytic product was not possible. 



Phenyl-acetic Acid. This acid electrolyzed in the 

 form of its potassium salt by Slawik 8 yielded free 

 phenyl-acetic acid. 



Cinnamic Acid. Cinnamic acid, investigated by 

 Brester, 8 showed a similar behavior in the electrolysis 

 of both the free acid and the neutral solutions of its 

 salts. 



Benzyl-malonic Acid. When this acid in the form 

 of its ethyl-potassium salt was submitted to elec- 

 trolysis by Brown and Walker 4 it showed a behavior 

 materially different from that of malonic acid. The 

 solution became dark-colored and contained no new 

 compound. If oxidation occurred it was a complete 

 oxidation into carbon dioxide and carbon monoxide, 

 such as has been observed in the case of the unsatu- 

 rated acids. 



1 Lieb. Ann., 274, 67. 



9 Chem. Ber., 7, 1051. 



Jahresb. f. Chem., 1866, p. 87. 



4 Lieb. Ann., 274, 67. 



