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 Hg Br 2 O 3 Br 2 , 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, CH 3 CO CH 2 Cl, was treated with potassium 

 cyanid and the cyanid of acetone, CH 3 COCH 2 (CN), was obtained. 

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



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 1 * 3 C 2 H s 



CO i 



When /3-ethyl-aceto-succinic ester, C H , is heated 



V-.XJ. I 



C0 2 C 2 H 5 CO *C 2 H 5 

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



CH 3 O CH 2 O 



I \\ \\ \\ 



., C O C C O C 



lactonic acid, tt , or , , 



C CHC 2 H 5 CH CHC 2 H 5 



CO 2 H CO 2 H 



