40 BIBLIOGRAPHY OF 



responding body can be formed from the dichlor-acetoacetic ester as 

 should be the case if it were the monad nitroso group which was intro- 

 duced. 



CLAISEN, L. AND F. E. MATTHEWS, 1883. 



Ann. Chem. 218, 170-185 ; J. Chem. Soc. 46. 443 ; Jsb. Chem. 1883, 

 963 ; Bull. Soc. chim. 40, 473. 



Condensation of Acetoacetic Ester with Aldehydes. 



By treating acetoacetic ester with aldehydes, the following two com- 

 pounds are formed, the first one much more easily than the second, 

 CH 3 CO C : (: CHR) CO 2 C 2 H 5 and CH : (: CHR) COCH 2 CO 2 C 2 H 5 . 

 Acet-ethylidenacetic ester, CH 3 COC : (: CHCH 3 ) CO 2 C 2 H 5 , made by 

 passing hydrochloric acid gas through a mixture of acetoacetic ester 

 and aldehyde is a colorless liquid which boils at 210. to 212 Its 

 specific gravity is 1.022 at 15? It easily changes back into aldehyde 

 and acetoacetic ester. The following were prepared and described. 

 Acetisobutylidenacetic ester, Ce H 8 (C 4 H 8 ) O 3 ; acetisamylidenacetic 

 ester, C 6 H 8 (C 5 H IO )O 3 ; acet-trichlor-ethyliden acetic ester, C 6 H 8 (C 2 

 HC1 3 ) O 3 , which is a aceto-trichlor-crotonic ester; aceto-furfural acetic 

 ester, C 6 H 8 (C 5 H 4 O) O 3 , which is a acet-furfuracrylic ester ; aceto 

 benzal acetic ester Ce H 8 (CHCe H 5 ) O 3 , which is a acet-cinnamic 

 ester ; benzal- ace toethylacetic ester, C 6 H 5 CH : CHCOCH (C 2 H 5 ) 

 CO 2 C 2 H 5 ; and benzalacetodiethylacetic ester, C 6 H 5 CH : CHCOC 

 (C 2 H 5 ) 2 C0 2 C 2 H 5 . 



DUISBERG, C., 1883. 

 Ber. 16, 133-139; Jsb. Chem. 1883, 1112. 



Converting Acetoacetic Ester into Succinosuccinic Ester which 

 is Convertable into Hydroquinone. 



Succinic ester, made from acetoacetic ester, was treated with sodium 

 and sodium succinosuccinic ester, C I2 H I4 O 6 Na 2 , prepared. As in dry 

 acetic ester, the sodium caused no reaction even at 100 until some 

 sodium ethoxid was added. Sodium succinosuccinic ester which has 



