14 BIBLIOGRAPHY OF 



SAUR, RICHARD, 1877. 

 Ann. Chem. 188, 257-269. 

 Methyl=ethyl=acetoacetic Ester, Methyl=ethyl=acetic Acid and 

 «=MethyI=ethyl=y?=oxy butyric Acid. 



Methyl-ethyl-acetoacetic ester, CH3 CO C(CH3)(C2 H5)C02 C. H5, 

 is colorless, boils at 198° and its specific gravity is .974 at 22.° It pro- 

 duces a violet color with ferric chlorid. When treated with sodium 

 ethoxid it gives methyl-ethyl acetic ester, CH (CH3)(C2 H5) CO^ C^ H5, 

 while sodium amalgam acting on it produces a-methyl-ethyl-/9-oxybu- 

 tyric ester. 



CONRAD, M., 1877. 



Ann. Chem. i88, 269-274. 



Metal Acetoacetic Esters. 



The copper, nickel, cobalt, magnesium, and aluminum salts of aceto- 

 acetic ester were produced and described. In each case but one hy- 

 drogen atom of the methj'lene group in acetoacetic ester can be re- 

 placed. This can be replaced by either a metal or a non-metal because 

 its position between two carbon^d groups weakens its positive character. 



NORTON, TH. AND A. OPPENHEIM, 1877. 



Ber. 10, 701-704 ; Jsb. Chem. 1877, 685. 



Action of Carbon Bisulfid on Acetoacetic Ester. 



By this action a monobasic acid of the formula CH3 



CO 



C: S, H 

 C: S O C. H5 

 CO2 C2 H"^ 

 was formed which was named by the authors thiorufic acid. A metallic 

 oxid and carbon bisulfid acting on acetoacetic ester produce a compound 

 CH3 CO C (:C: S) CO2 C2 H5 which the authors consider as the acetyl 

 derivative of CH (:C: S) CO2 H, which they name thio-carbacetic acid. 



