ACETO ACETIC ESTER 69 



SCHILLER-WECHSLER, MAX, 1885. 



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



Anilido-pyrotartaric Acid. 



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

 ^-cyan-^-oxybutyric ester, CH 3 C (CN)(OH)-CH 2 CO 2 C 2 H 5 , which 

 was produced by treating acetoacetic ester with hydrocyanic acid. It 

 is very unstable, from it was prepared /?-cyan-/3-anilido-butyric ester, 

 CH 3 C (CN) (NHC 6 H 5 ) CH 2 CO 2 C 2 H 5 , 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 3 

 C 



/ \\ 



C0 2 HC C C0 2 H 



CH 3 C C CH 3 



\ // 



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. 



By using an excess of aldehyde a product different from the usual 

 one is formed which is a 7--lutidin-/9-carboxylic ester, C 5 NH 2 (CH 3 ) 2 



