94 BIBLIOGRAPHY OF 



OTTO, ROBERT, 1888. 



Ber. 21, 89-99 ; J- Chem. Soc. 54» 360. 



Analogy between the Ketonic Acids and the Alkyl Sulfones of 



the Fatty Acids. 



Some alkyl sulfones of the fatty acids of the formulae RSO2 CO2 H ; 

 RSO2 CH2 CO2 H and RSO^ CH^ CH^ CO., H were described and the 

 points of resemblance between them and the corresponding ketonic 

 acids pointed out. 



BERQREEN, HENRY, 1888. 



Ber. 21, 337-352 ; J. Chem. Soc. 54, 444 ; Bull. Soc. chim. 50, 556. 



Thiocarbonyl Chlorid. 



The action of thiocarbonyl chlorid on sodium and copper acetoacetic 

 esters is given in this article (Ber. pps. 347-348) by which is produced 

 thiocarbonylacetoacetic ester, a solid which .softens at 152° and melts at 

 156° to 162^ The formula [CH3 COC (CS) CO2 C^ H5]x is ascribed to it, 

 as the author thinks it is not a simple molecule. It will not react with 

 phenylhydrazin or hydroxyl-amin. Thiocarbonyl chlorid acting on 

 sodium methyl-acetoacetic ester produces an oil free from chlorin, which 

 contains sulfur. It cannot be distilled and no crystalline product can 

 be obtained from it. 



BONQARTZ, J., i888. 



Ber. 21, 478-487 ; J. Chem. Soc. 54. 478. 



Compounds of Aldehydes, Ketones and Ketonic Acids with 



Thioglycollic Acid. 



The action of hydrochloric acid gas on a mixture of thioglycollic 

 acid and acetoacetic ester is given in this article (Ber. p. 485) by which 

 a white crystalline powder is formed which melts at 95° to 96.° It is 

 acetoacetic ester dithioglycollic acid and has the formula 



p-tT p^(SCH2 CO2 H)2 

 ^^3 '-\CH2 CO2 C2 H.s 



