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 RSO 2 CO 2 H ; 

 RSO 2 CH 2 CO 2 H and RSO 2 CH 2 CH 2 CO 2 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 15 2 and melts at 

 156 to 162. The formula [CH 3 COC (CS) CO 2 C 2 H 5 ] 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. 



BONGARTZ, J., 1888. 

 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 



H 2 CO 2 H) 2 

 C0 2 C 2 H 5 



