ACETO ACETIC ESTER 49 



KNORR, L., 1883. 



Ber. 16, 2597-2599; J. Chem. Soc. 46, 302; Jsb. Chera. 1883, 795; 

 Bull. Soc. chini. 42, 655. 



Action of Acetoacetic Ester on Phenylhydrazin. 



When these substances react there is formed CH3 C (HN2 Ce H5) 

 CH2 CO2 C2 H5. If this be heated on the water bath alcohol is given 

 offanda bod}' Cio Hio N2 O, is left which melts at 127°; it resembles car- 

 bostyril ; its constitution is unknown. When it is heated with an 

 excess of phenylhydrazin its anhydrid C20 Hjs N4 O is produced, 

 which from its reactions is shown to contain a hydroxy! group. 



WISLICENUS, J., 1883. 



Ann. Chem. 219, 307-321 ; J. Chem. Soc. 44. 966 ; Jsb. Chem. 1883, 



980. 



Methyl=^9=butyl Ketone and its Derivatives. 



Ethyl-methyl-acetoacetic ester is saponified and methyl-/?-butyl 

 ketone, CH3 COCH (CH3) (C2H5), obtained, it boils at 118° and has a 

 specific gravity of .8 18 at 14.5? By treating it with sodium and water 

 two products were obtained, methyl-^?-butyl carbinol, 



CH3CHOHCH— 



CH3 CH3 



I ^ I 



— (CH3)(C2H5), and methyl-/3-butyl pinacone, COH — COH 



CHCH3 CHCH3 

 I ^ I 



C2 H5 C2 H5 



Methyl-/9-butyl carbinol is changed into the iodid and then 

 by substituting hydrogen for this iodin methyl-di-ethyl-methane, 



H 



C2 H5 — C — CH3, is formed. 

 I 

 Co He 



