ACETO ACETIC ESTER 95 



HALLER, A. AND A. HELD, 1888. 



Compt. rend. 105, 115-117 ; J. Chem. Soc. 5 2 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 

 acetyl chlorid in ether. The equation given is 2 CH(CN)NaCO 2 C 2 H 5 

 + CH 3 COCl=NaCl+CH 2 (CN)C0 2 C 2 H 5 + CH 3 COC(CN)NaCO 2 C 2 H 5 . 

 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- ai, 187 (C). 

 Cyan-acetoacetic Methyl Ester. 



This body, CH 3 COCH (CN) CO 2 CH 3 , 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. 



GENVRESSE, P., 1888. 



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

 Chlorin Derivatives of Acetoacetic Ester. 



Dichlor-acetoacetic ester can be decomposed by hydrochloric acid 

 into unsymmetrical dichloracetone, wherefore, (?) the formula CHC1 2 

 COCH 2 CO 2 C 2 H 5 is assigned to it. For similar reasons the trichlor- 

 derivative is supposed to be CC1 3 COCH 2 CO 2 C 2 H 5 , tetrachlor deriva- 

 tive CC1 3 COCHC1CO 2 C 2 H 5 , and the penta-chlor derivative CC1 3 

 COCC1 2 CO 2 C 2 H 5 . Two compounds containing, one, seven and the 

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

 the formulae CC1 3 COCC1 2 CO 2 C 2 H 3 C1 2 and CC1 3 COCC1 2 CO 2 CHC1 4 . 

 Acetoacetic methyl ester yields similar derivatives. 



