Cycloids containing nitrogen. 919 



CYCLOIDS CTHinOsNa 



C-Methyl-ethyl-barbituric acid 



C-Propylbarbituric acid 



C-isoPropylbarbituric acid. 



Fischer, E. iind Dilthey, A. Liebigs 



Ami. Chem., Leipzig, 335, 1904, (334- 



3(38). 



1930 



CYCLOID C7Hi20N2 



Methylpropylpyrazolone 

 C3H,.CH.C0 

 CH3.C==X'^ 

 Locquin, Rene. Paris, Bui. soc. chim., 

 (ser. 3), 31, 1904, (760-762). 



CYCLOID CtHicO.Nz 



Dimethylethylhydantoin 



1-AZ<>5, ^)-IlIMETHYL-3-ETHYL-^YDA^•T01^^ 



/CO.OMe X 



VXEt.CO ^ P ^ 

 and the corresponding azo-3, 5, 5- 



TK[METHYL-HYDANTOIK and AZO-3-rHESYL- 

 .5, 5-DIMETHYL-HY'DANTOIS. 



Bailey, J. R. J. Araer. Chem. Soc, 

 Eastou, Pa., 26, 1904, (1006-1026). 



CYCLOID CaH60N2 



4-KetodihydroquinoxaIine 



G, 8-DtBROMO DERIVATIVE 

 V__rii_r 



C6H,Br,<^-^,jj 



Bogert, M. T. and Hand, W. F. 3,5- 

 bibrora-2-aminobenzoic acid : its nitrile 

 and the sjii thesis of quinazolines from 

 the latter. New York, N.Y., Cent. 

 Havemeyer Lab., Columbia Univ\, No. 

 86 in J. Amer. ('hem. Soc, Easton, Pa., 

 25, 1903, (935-947). 



r. u N=CH 

 O-A.M..V0 DEnrvATivE CeH,<^^_^^jj^ 



and its benzyVidene derivative, and the 

 plietiijl derivative. 



Thode, C. J. prakt. Chem., Leipzig, 

 fX.F.), 69, 1904,(92-104). 



2-Benzyl and 2-chlorobenzyl 



DERIVATIVES. 



Konig, W. J. prakt. Chem., Leipzig, 

 (N.F.), 69, 1904, (1-39). 



CYCLOID CsH OiNj 



Dioxyquinopyrine 



CO.NH 

 ^^"^^<CO.CH, 



and its salts. 

 Fels, B. Berlin, Ber. D. chem. Ges., 

 37, 1904, (2129-2137). 



CYCLOIDS CiHiOiN: 



Dimethylglutazine carboxylic acid 

 Ethyl ester 



XTrr^CO CHMe^p vu 



^^<CO.CMeiCO,Et)>^ ■ ^^" 

 Baron, II., Remfry, F. G. P. and 

 Thorpe, J. F. [Ethyl dimethylglutazine- 

 carboxylate, and its hydrochloride and 

 dibenzoyl derivative.] 



Ethylglutazine carboxylic acid 



Ethyl ester 



.,„ X"0 CHEt , 



-^-"S:'0.CH(C02Et)^^ 



NH 



Baron, H., Remfry, F. G. P. and 

 Thorpe, J. F. [Ethyl ethylgkitaziue- 

 carboxvlate and its dibenzovl derivative.] 

 London, J. Chem. Soc, 85," 1904, (172G- 

 1761). 



CYCLOID CsHi O6N2 



2, 5-Diacipiperazine-3, 6-diacetic 

 acid 



Diethyl ester 



C02Et.CH2.CH<^'Q-^Ty>CH.CH2. 



C02Et 

 and the DIAMIDE {asparaginimide). 



Fischer, E. und Koenigs, E. Berlin, 

 Ber. I), chem. Ges., 37, 1904, (4.585- 

 4603). 



CYCLOID CaH.jOzNa 



Prolylalanine anhydride. 

 Fischer, E. und Suzuki, U. Berlin, 

 Ber. U. chem. Ges., 37, 1904, (2842- 

 2848). 



CYCLOIDS CaH.jOsNj 



C-Diethylbarbituric acid 



{Veronal) 

 CEt,<gg|H>co 

 idso 



Methylpropylbarbituric acid. 

 Fischer, E. und Dilthey, A. Liebigs 

 Ann. Chem., Leipzig, 335, 1904, (334- 

 368). 



