ACETO ACETIC ESTER 25 



KONIG, HEINR., 1879. 



Ber. 12, 768-770 ; J. Chem. Soc. 36. 706 ; Jsb. Chem. 1879, 662. 



Action of Hydrocyanic and Hydrochloric Acids on Methyl-aceto- 



acetic Ester. 



Just as these acids act on acetoacetic ester to produce oxypyrotartaric 

 acid so they act on methyl-acetoacetic ester and produce the next high- 

 er homologue, oxyadipic acid thus : CH 3 CO CH (CH 3 ) CO 2 C 2 H 5 + 

 HCN=CH 3 COH (CN) CH (CH 3 ) CO 2 C 2 H 5 and then CH 3 C OH 

 (CN) CH (CH 3 ) C0 2 C 2 H 5 + 2 HC1 + 2 H 2 O=CH 3 COH (CO 2 H) CH 

 (CH 3 ) C0 2 H + N H 4 C1 + C 2 H 5 Cl. 



LADENBURG, A. AND L. RUGHEIMER, 1879. 



Ber. 12, 953-954; J. Chem. Soc. 3<> 715 ; Jsb. Chem. 1879, 435. 

 Acetoacetic Ester Derivatives of Ortho-tolylendiamin. 



Ortho-tolylendiamin C6 H 3 CH 3 (NH 2 ) 2 reacts with acetoacetic ester 

 to formC 6 H 3 CH 3 <*J**> C <^ 3 CO 2 C 2 H 5 , a solid, melting at 82. 

 It is insoluble in water, soluble in alcohol and such solvents; when heated 

 it decomposes into ethenyl-tolylendiamin C 6 H 3 

 a solid which melts at 198- 199. 



ALLIHN, F., 1879. 



Ber. 12, 1298-1300; J. Chem. Soc. 36, 915 ; Jsb. Chem. 1879, 627. 

 Chlorinated Metal Derivatives of Acetoacetic Ester. 



The chlorinated metal derivatives, corresponding to the formula 

 (CH 3 CO CC1 CO 2 C 2 H 5 ) x M, may be produced by shaking the 

 monochlor-acetoacetic ester with an ammoniacal solution of the salt. 

 The copper, magnesium, nickel, and cobalt salts were described. The 

 dichlor-acetoacetic ester will give no metal derivatives. 



