56 BIBLIOGRAPHY OF 



This substance treated with barium hydroxid and then an acid gives 

 CH 2 CO 2 HCH 2 CH 2 OH , which upon heating gives the butyrolactone, 

 CH 2 CH 2 



CH 2 CO > * 



ELION, H., 1884. 



Rec.* trav. chim. 3 231-270 ; Ber. 17, 568 (C). 

 Ethyl-sodacetoacetic Ester and Sodacetoacetic Ester. 



Kthyl-sodacetoacetic ester hydrate, Cg H I3 NaO 3 + H 2 O , and sodace- 

 toacetic ester hydrate, C6H 9 NaO 3 -f- H 2 O , were prepared. Sodium 

 bisulfite forms a compound with acetoacetic ester but will form none 

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

 diacetyl-acetic ester, CH 3 COC (C 2 H 5 ) (C 2 H 3 O) CO 2 C 2 H 5 , 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. gS, 522-525 ; Bull. Soc. chim. 41, 330 ; J. Chem. Soc. 46, 

 727; Jsb. Chem. 1884, II21 ; Ber ! 7 2O 4 (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. Bthylcyanacetoacetic 

 ester boils at io5-iio under 15 to 2 m.m. pressure, its specific gravity 

 is .976 at 20 Methylcyanacetoacetic ester boils at 9O-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 3 COC (CN)(C 2 H 5 ) CO 2 C 2 H 5 and CH 3 COC (CN) 

 (CH 3 )C0 2 C 2 H 5 . - 



