ACETO ACETIC ESTER lOI 



JAECKLE, A., 1888. 



Ann. Chem. 246, 32-52 ; J. Chem. Soc. 54» 1103 ; Ber. 21, 63S (C). 



Higher Homologues of the Synthetical Pyridins and Piperidins. 



The normal propyl-lutidin hydrodicarboxylic ester, C5 NH2 (0113)2 

 03117(00202115)2, obtained from normal butaldehyde and ammonia 

 acting on acetoacetic ester and alcohol, is a crystalline substance melt- 

 ing at 118° From this the normal propyl-lutidin-dicarboxylic ester, 

 the free acid and the normal propyl-lutidin were prepared. Hexyl- 

 lutidin hydrodicarboxylic ester was prepared from ammonia, acetoacetic 

 ester and oenanthol, OeHjjOHO, and from it normal hexyl-lutidin, 

 O5 NH2 (01X3)2 Oe H, 3. A number of piperidins were obtained from 

 the corresponding pyridins and described. 



WISLICENUS, WILHELM, 1888. 



Ann. Ohem. 246, 306-309. 

 Synthesis of Ketone Acid Esters. 



As a portion of this article the author briefly reviews the controversy 

 as to the formation of acetoacetic ester from sodium and acetic ester. 

 He thinks that sodium acts on alcohol to form sodethoxid and liberate 

 hydrogen, that the sodethoxid reacts with acetic ester to produce 

 sodacetoacetic ester and alcohol and that thus alcohol is continually 

 produced and used up again. Some of the hydrogen is used up in 

 secondary reactions and some is given off. He doubts the formation of 

 a sodacetic ester as an intermediate product. 



JAPP, FRANCIS R. AND FELIX KLINQEMANN, 1888. 



Ann. Ohem. 247, 190-225 ; J. Ohem. Soc, 53. 519-544. 



Constitution of the So=calIed Mixed Azo Compounds. 



The compounds treated of in this article were prepared from aceto- 

 acetic esters. 



