ACETO ACETIC ESTER I I 



only slight evolution in a warm reaction. Amyl alcohol is also pro- 

 duced. Acetoacetic amyl ester is colorless, boils at 223, has a specific 

 gravity of .954 at 10, and colors ferric chlorid red. Ethylacetoacetic 

 amyl ester, CH 3 CO CH ( C 2 H 5 ) CO 2 C 5 H IX , was also produced, it 

 boils at 233 to 236, has a specific gravity of .937 at 26 and gives no 

 color with ferric chlorid. 



CONRAD, M., 1877. 

 Ann. Chem. 186, 232-244 ; J. Chem. Soc. 32, 435 ; Jsb. Chem. 



1877, 690. 

 Halogen Substitution Products of Acetoacetic Ester. 



When acetoacetic ester is treated with bromin it takes it up and hydro- 

 bromic acid is given off, forming the compound Ce Hg Br 4 O 3 . Its 

 specific gravity is 2.32 at 21 and it is decomposed upon distillation. 

 Chlorin passed through acetoacetic ester is absorbed, hydrochloric acid 

 is given off, and Ce H 8 C1 2 O 3 is formed, This boils at 205 to 207 and 

 its specific gravity is 1.293 at 16! To prove the constitution of the last 

 compound it was treated with hydrochloric acid at 180, when dichlor- 

 acetone, CH 3 CO CH C1 2 , was formed, and with caustic potash when 

 dichloracetic ester, CH C1 2 CO 2 C 2 H 5i was separated. Kthylacetoacetic 

 ester was treated with chlorin and CH 3 CO C Cl (C 2 H 5 ) CO 2 C 2 H 5 

 was obtained. The author decides that the dichloracetoacetic ester is 

 CH 3 CO C C1 2 CO 2 C 2 H 5 . Amyl ester of acetoacetic acid and the amyl 

 ester of ethylacetoacetic acid were treated with chlorin, and dichlor- 

 acetoacetic amyl ester and ethyl-monochloracetoacetic amyl ester were 

 produced. 



BONNE, JULIUS, 1877. 



Ann. Chem. 187, i-u ; J. Chem. Soc. 32, 437 

 Benzoylacetoacetic Ester. 



When benzoyl chlorid acts upon sodacetoacetic ester the two sub- 

 stances combine and sodium chlorid is formed. The compound, ben- 

 zoylacetoacetic ester, CH 3 CO CH ( CO C 6 H 5 ) CO 2 C 2 H 5 , decomposes, 

 upon being distilled, into carbon monoxid, carbon dioxid, benzoic ester 

 and benzoic acid. When treated with caustic potash methyl phenyl 

 ketone, CH 3 CO Ce H 5 , and a little benzoic acid are produced. 



