56 BIBLIOGRAPHY OF 



This substance treated with barium hj'droxid and then an acid gives 

 CH2CO2 HCH2 CH2 OH , which upon heating gives tlie butyrolactone, 

 CH2CH2 



CH2 CO -^ ^ • 



ELION, H., 1884. 



Rec* trav. chim. 3, 231-270 ; Ber. 17, 56S (C). 



EthyI=sodacetoacetic Ester and Sodacetoacetic Ester. 



Ethyl-sodacetoacetic ester hydrate, Cg H13 Na03+ H2O , and sodace- 

 toacetic ester hydrate, C6 Hg NaOjH- H2O , were prepared. Sodium 

 bisulfite forms a compound with acetoacetic ester but will form none 

 with diacetyl- , ethylacetyl- and ethyldiacetyl- acetic esters. Ethyl- 

 diacetyl-acetic ester, CH3COC (C2 H5) (C2 H3 O) CO2 C2 H5 , could not 

 be prepared from sodium diacetyl-acetic ester but could be from ethyl- 

 acetoacetic ester and acetyl chlorid. 



*Original article not consulted. 



HELD, A., 1884. 



Compt. rend. 98, 522-525 ; Bull. Soc. chim. 4'. 330 ; J. Chem. Soc. 46, 

 727; Jsb. Chem. 1884, 1121 ; Ber. 17, 204 (C). 



Ethyl= and Methyl=cyanacetoacetic Esters. 



The esters could not be prepared from the cyan-acetoacetic esters but 

 were successfully prepared by treating ethyl- acetoacetic ester and 

 methyl-acetoacetic ester with cyanogen gas. Ethylcyanacetoacetic 

 ester boils at 105°-! 10° under 15 to 2 m.m. pressure, its specific gravity 

 is .976 at 2or Methylcyanacetoacetic ester boils at 90°-95° under 15 

 to 20 m.m. pressure, and has a specific gravity of .996 at 20.° The 

 decomposition products with potassium hydroxid show that the for- 

 mulae must be CH, COC (CN)(C2 H,) CO2 C^ H, and CH,, COC (CN) 

 (CH,) CO2C2HS. 



