46 BIBLIOGRAPHY OF 



HANTZSCH, A., 1883. 



Ber. 16, 1946-1948 ; J. Chem. Soc. 44> 1082 ; Jsb. Chem. 1883, 1068. 



Condensation of Acetoacetic Methyl Ester with 

 Aldehyde=ammonia. 



This condensation is entirely similar to that with the ethyl ester, a 

 dihydro-collidin-dicarboxylic methyl ester, C5 N H2 (€113)3(0020113)2, 

 being formed. From this were formed dihydro-collidin-monocarboxylic 

 methyl ester, C5 NH2 (.CH^)^ H (CO2 CH3), and coUidin-dicarboxylic 

 methyl ester, C, N (CH3)3 (CO2 CH3)2. 



HANTZSCH, A., 1883. 



Ber. 16, 1948-1952 ; J. Chem. Soc. 44, mi ; Jsb. Chem. 1883, 1069 ; 

 Bull. vSoc. chim. 42, 182. 



Condensation of Acetoacetic Ester and Ortho=amidophenoI. 



These substances condense as follows : 

 TT ^ OH , ^ pv ^CH3 P TT -^ ~~~>P ^ ^^3 



' ^4<NH2'^^-^ "-CH2CO.C2H5~^''^4^NH-' '^'^CH2 CO2 C, 



H5+H2O. 



The product, very unstable, being easily decomposed into its com- 

 ponents, melts at io7°-io8.° A potassium salt, C24 H29 K Oe N2. was 

 formed ; one hydrogen atom of the amid group of every two molecules 

 apparently being replaceable. 



PECHMANN, H. v. AND C. DUISBERQ, 1883. 



Ber. 16,2119-2128; J. Chem. Soc. 46, 66; Jsb. Chem. 1883, 1065; 

 Bull. Soc. chim. 42, 587. 



Compounds of Phenols and Acetoacetic Ester, 



In the presence of a dehydrating agent phenols and acetoacetic ester 

 react to form substituted coumarins. 



I 



