70 BIBLIOGRAPHY OF 



CO2 C2 H5 . It is an oil which boils at 246° to 247° and from it, its 

 acid can be formed, the calcium salt of which, when distilled from lime, 

 yields 2:4, hitidin. The free acid C5 NH^ (CH3)2 CO^ H , can be 

 oxidized to carbocinchomeronic acid, C5 NHj (CO2 H)3 [2 : 3 : 4] , 

 which yields cinchomeronic acid, C5 NH3 (CO2 H)2 [2 : 3]. 



BUCHKA, K., 1885. 



Ber. 18, 2090-2093 ; J. Chem. Soc. 48, 1200 ; Jsb. Chem. 1885, 1351. 

 Action of Sulfur Chlorid on Sodacetoacetic Ester. 



The sulfid of acetoacetic ester (CH3 COCHCO2 C2 H5)2 S , is produced 

 by this action. It melts at 80° to SiT The reduction or condensation 

 of this was impossible because of its unstability. Carbonyl chlorid 

 acts on sodacetoacetic ester to form chloracetoacetic ester. 



FITTIQ, R., 1885. 



Ber. 18, 2526-2527 ; J. Chem. Soc. 50, 47. 



Condensation of Acetoacetic Ester with Dibasic Acids. 



Acetoacetic ester condenses with succinic acid to form a compound 

 C10H12O5, which melts at 75° -76° and which is a mono-ethyl salt of 

 a dibasic acid, Cs Hs O5 . This acid melts at 199° to 200.° With 

 sodium pyrotartrate, acetoacetic ester gives the mono-ethyl ester of the 

 acid C9 H10O5 . Further investigations are being made in this line. 



HANTZSCH, A., 1885. 



Ber. 18, 2579-2586 ; J. Chem. Soc. 50, 77 ; Jsb. Chem. 1885, 830. 



Constitution of the Synthetical Hydro=pyridin Derivatives. 



The hydrogen in these compounds has been assumed to be in con- 

 nection with carbon but as Kukart has obtained a substituted hydro- 

 pyridin derivative by the action of paraldehyde and sulfuric acid on the 



