38 BIBLIOGRAPHY OF 



LIPPMANN, E., 1882. 



Ber. 15, 2142 — 2144. Jsb. Chem. 1882, 845. 



The Position of Bromin in Acetoacetic Ester. 



The author insists upon the correctness of his former statement, 

 which Duisberg denies, that a dibrom-addition dibrom-substitution 

 product of acetoacetic ester, Ce Hs Br^ O3 Bra, exists. 



MATTHEWS, A. E. AND W. R. HODKINSON, 1882. 



Ber. 15, 2679 ; J. Chem. Soc. 44, 311 ; Jsb. Chem. 1882, 839. 



Production of Acetoacetic Ester. 



Monochlor acetone, CH3 CO CH2 CI, was treated with- potassium 

 cyanid and the cyanid of acetone, CH3 COCH2 (CN), was obtained. 

 This, when treated with hydrochloric acid, gave acetoacetic ester. 



I 



YOUNG, SIDNEY, 1882. 



Ann. Chem. 216, 45-52 ; J. Chem. Soc. 44, 456 ; Ber. 16, 405 ; Jsb. 



Chem. 1882, 883. 



Peculiar Decomposition of Substituted Acetoacetic Esters. 



9^^ C2 H, 



CO I 



When ,9-ethvl-aceto-succinic ester, • C H , is heated 



' " y^rl I 



CO2C2H5 CO2C2H5 

 it breaks down into ketolactonic ester which can be changed into keto- 

 CH, O CH2 O 



c-o-c C-O-C 



lactonic acid, \\ 1 , or , | 



C C^C2 H5 CH CHC2 H5 



CO. H CO2 H 



i 



