ACETO ACETIC ESTER 69 



SCHILLER-WECHSLER, MAX, 1885. 



Ber. 18, 1037-1052 ; J. Chem. Soc. 48, 900. 



AniIido=pyrotartaric Acid. 



In this article mention is made of cyanhydrin of acetoacetic ester or 

 /9-cyan-^-oxybutyric ester, CH3 C (CN) (OH) — CH^ CO2 C^ H5 , which 

 was produced by treating acetoacetic ester with hydrocyanic acid. It 

 is very unstable, from it was prepared /9-cyan-/9-anilido-butyric ester, 

 CH3 C (CN) — (NHCe H5) CH^ CO^ C^ H5 , by the action of anilin. 



HANTZSCH, A., 1885. 



Ber. 18, 1744-1749; J. Chem. Soc. 48, 1078; Jsb. Chem. 1885, 815; 

 Bull. Soc. chim. 46, 166. 



Constitution of Synthetical Pyridin Derivatives 



After discussing the reactions of these bodies the author decides 

 that the tri-methyl-pyridin-dicarboxylic acid obtained from ammonia, 

 aldehyde and acetoacetic ester has the formula : 



CH, 



I 

 C 



/ w 



CO2 HC C — CO. H 



ii I 

 CH3— C C — CH3 



\ // 



N 



MICHAEL, R., 1885. 



Ber. 18, 2020-2029; J. Chem. Soc. 48, 1244; Jsb. Chem. 1885, 826. 



Synthesis of Pyridin Derivatives from Acetoacetic Ester, 

 Aldehyde and Ammonia. 



B3' using an excess of aldehyde a product different from the usual 

 one is formed which is a — ^-lutidin-/?-carboxylic ester, C5 NH2 (CH3)2 



