ACETO ACETIC ESTER 95 



HALLER, A. AND A. HELD, 1888. 



Compt. rend. 105, 115-117 ; J. Cliem. Soc. 52, 1029. 



Cyan=acetoacetic Ester. 



A new method of producing this compound is given. Cyanacetic 

 ester dissolved in alcohol is mixed with sodium dissolved in alcohol and 

 acet}'! chlorid in ether. The equation given is 2 CH(CN)NaC02C2H5 

 + CH3 COCl=NaCl + CH2(CN)COX3H5+ CH3COC(CN)NaC02C2H5. 

 This shows conclusively that the composition of the compound is that 

 here assigned to it. 



HALLER, A. AND A. HELD, 1888. 



Compt. rend. 106, 210-213 ; Bull. Soc. chim. 49, 243 ; J. Chem. Soc. 



54, 579 ; Ber- 21, 1S7 (C). 



Cyan=acetoacetic Methyl Ester. 



This body, CH3 COCH (CN) CO2 CH3, was prepared from cyanogen 

 chlorid and a mixture of acetoacetic methyl ester and sodium methoxid. 

 It melts at 46.5.° It was also prepared by treating sodcyanacetic methyl 

 ester with acetyl chlorid. The sodium and calcium compounds were 

 prepared. 



QENVRESSE, P., 1888. 



Compt. -rend. 107, 687-689; J. Chem. Soc. 56, 122 ; Ber. 21, 831 (C). 



Chlorin Derivatives of Acetoacetic Ester. 



Dichlor-acetoacetic ester can be decomposed by hydrochloric acid 

 into unsymmetrical dichloracetone, wherefore, (?) the formula CHCI2 

 COCH2 CO2 C2 H5 is assigned to it. For similar reasons the trichlor- 

 derivative is supposed to be CCI3 COCH2 CO2 C2 H5, tetrachlor deriva- 

 tive CCI3 COCHCICO2 C2 H5, and the penta-chlor derivative CCI3 

 COCCI2 CO2 C2 H5. Two compounds containing, one, seven and the 

 other nine atoms of chlorin were also produced, described and given 

 the formulae CCI3 COCCI2 CO2 C2 H3 CI2 and CCI3 COCCI2 CO2 CHCI4. 

 Acetoacetic methyl ester yields similar derivatives. 



