34 BIBLIOGRAPHY OF 



HANTZSCH, A., 1882. 



Ann. Chem, 215, 1-82 ; J. Chem. Soc. 44> 82 ; Ber. 15. 2912 ; Jsb. 



Chem. 1882, 491. 



Synthesis of Pyridin Derivatives from Acetoacetic Ester and 

 Aldehyde=Ammonia. 



The condensation product of acetoacetic ester and aldehyde-ammonia 

 is dihydrocollidin-dicarboxylic ester, 



OH, 



c 



C0 2 C 2 H 5 C H C C0 2 C 2 H 5 



CH 3 C H C CH 3 



\ / 



N 



The author describes this and many of its derivatives. 



CERESOLE, M., 1882. 



Ber. 15, 1326-1328 ; J. Chem. Soc. 42, 1052 ; Jsb. Chem. 1882, 758 ; 

 Bull. Soc. chim. 38, 390. 



Nitrosoacetone and Acetoacetic Acid. 



By allowing a mixture of acetoacetic ester and potassium hydroxid 

 'to stand a day and then treating it with an acid, acetoacetic acid is 

 produced. This is the first production of it. It is a colorless liquid, 

 mixes with water and is strongly acid. It is very unstable, decompos- 

 ing at less than ioo. 



DUISBERG, C., 1882. 



Ber. 15, 1378-1388; Ann. Chem. 213, 133-181 ; J. Chem. Soc. 42, 

 1192 ; Jsb. Chem. 1882, 841 ; Bull. Soc. chim. 38, 391. 



Contribution to the Knowledge of Acetoacetic Ester. 



By treating acetoacetic ester with bromin the author cannot get L,ipp- 

 mann's dibrom addition product or Conrad's dibrom addition dibrom 



