ACETO ACETIC ESTER II) 



MICHAELIS, A. AND OSCAR BURCHARD, 1889. 



Ann. Chem. 254, 115-128. 



Syntheses by Means of Sodium-phenylhydrazin. Ethylenphenyl- 



hydrazin. 



In the last paragraph of this article mention is made that ethylen- 

 phenylhydrazin easily condenses with acetoacetic ester to form a 

 beautiful crystalline substance which melts at 54. It is being 

 investigated by the authors. 



RAYMAN, B. AND O. POHL, 1889. 



Ber. 22, 3247-3249 ; J. Chem. Soc. 58, 355. 

 Rhamnodiazin. 



Rhamnodiazin, Cis H 32 Os N 2 , is further studied but no very definite 

 results are obtained. Its constitution is probably CH 3 (CHOH) 4 CH 



PTT 



(N:C < ^-rj 3 n^. ^ TT N When rhamnose, acetoacetic ester and an 

 v^ri 2 i~U 2 L-2 ti 5 ) 2 



amin are mixed they form rhamnosamin. 



KIPPING, F. STANLEY AND W. H. PERKIN, Jr., 1890. 



J. Chem. Soc. 57. 29-38 ; Ber. 23, 249 (C). 

 a-fo-Diacetyl-a-w-diethylpentane. 



This substance whose properties and reactions are described is 

 obtained by treating sodacetoacetic ester with tri-methylene bromid. 

 These substances combine to form a-w-diacetyl-a-w-diethyl-pimelic 

 ester which is 



CH 3 CH 3 



CO CO 



C(C 2 H 5 )-(CH 2 ) 3 -C(C 2 H 5 ) 



C0 2 C 2 H 5 CO 2 C 2 H 5 



and when this is boiled with alcoholic potash there is formed - w-diacetyl- 

 a-oi-diethyl-pentane, CH 3 COCH (C 2 H 5 ) (CH 2 ) 3 CH (C 2 H 5 ) COCH 3 , 

 as well as some w-acetyl-a-w-diethyl-caproic acid. 



