}6 BIBLIOGRAPHY OF 



HALLER, A. AND A. HELD, 1882. 



Compt. rend. 95 235 237; J. Chem. Soc. 42, 1280; Jsb. Chem. 1882, 845. 

 Cyanacetoacetic Ester and its Derivatives. 



Cyanacetoacetic ester, CH 3 CO CH (CN) CO 2 C 2 H 5 , was produced 

 by passing cyanogen chlorid into sodacetoacetic ester. It is a solid, 

 melts at 26 and remains in a superfused condition even at 15 ; the 

 liquid has a specific gravity of 1.102 at 19 Potassium hydroxid de- 

 composes it. The sodium and calcium derivatives were described. 



SCHMID, WILHELM, 1882. 



J. prakt. Chem. 133, 81-83. 



New Method of Producing Resocyanin. 



Acetoacetic ester and resorcin react in the presence of zinc chlorid to 

 form resocyanin, which is : C 6 H 3 (OH) 2 C(CH 3 ) : CHCO 2 H [C : OH : 

 OH= 1:2:4]. 



WITTENBERG, MAX, 1882. 



J. prakt. Chem. 134, 66-78 ; J. Chem. Soc. 42, 1289; Ber. 15, 2908 ; 

 Jsb. Chem. 1882, 716 ; Bull. Soc. chim. 39, 72. 



Resocyanin and the Action of Acetoacetic Ester on Phenols in 

 Presence of Dehydrating Agents. 



Pyrogallol, C6H 3 (OH) 3 , and acetoacetic ester react in the presence of 

 sulfuric acid to form allylene-digallein, C I5 H I2 O6, which melts at 235 



(OH 



and has the constitution : C 6 H 3 ] O CH 2 



C 6 H 3 1 O- CH 2 



OH If orcinol, C 6 H 3 (CH 3 ) (OH) 2 , 



