Cycloids containing nitrogen. 



917 



1930 



CYCLOID C4H4ON2 



Ketodihydropyrimidine 



5-BEOMO-6-AMINO-2-KETODIHYDROrYRIMI- 

 DINE 



{5-Bromoc ytosine) 



Also 6-NlTRA.MIKO-2-KETO-DniYDROPTRIMI- 

 DINE. 



Wheeler, H. L. and Jobnson, T. B. 

 Amer. Chem. J., Baltimore, Md., 31, 

 1904, (591-G06). 



CYCLOID C4H4O3N2 



Methylparabanic acid 



NH.CO 

 Bruce, W. M. J. Amer. Chem. Soc, 

 Easton, Pa., 26, 1904, (449-464). 



CYCLOID C4H,02N2 



o-Methylhydantoin 



)3-AcETYL- DERIVATIVE. 



Siemonsen, L. Liebigs Ann. Clieni., 

 Leipzig, 333, 1904, (101-141). 



CYCLOIDS CsHeON. 



G - Oxy- 2-methylpyrimidine 



Gabriel, S. Berlin, Ber. !>. chem. 

 Ges.,37, 1904,(3638-3643). 



M ethylk eto dihy d r opy rimidin e 



6-AMINO-5-METHYL-2-KETODIIIYDROrYRI.Ml- 

 DINE 



CO NH^p„ 



^^^C(x\H2).Cile^'-^ 



{5-Mdliijhufositie^. 



Wheeler, H. L. and Johnson, T. 15. 

 Amer. Chem. J., Baltimore, ild., 31, 

 1904, (591-606). 



CYCLOIDS C5H6O2N2 



Dioxymethylpyrimidine 



^Iethyi. ktiieu 



.,^C(OMe).N ^.,.. 



^<C(OH) : CH>*^^^ 



and the homologous ethyl ether. 



Bruce, W. M. J. Amer. Chem. Soc., 

 Easton, Pa.. 26, 1904, (449-464). 



Glutazine 



Glutazise cyanide 



^^<CO.ci(CN)>^ • ^'^ 



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

 Thorpe, J. F. [Glutazine cyanide and 

 its dibenzojd derivative and osime.] 

 London, J. Chem. Soc, 85, 1904, (1726- 

 1761). 



CYCLOIDS C5H6O3N2 



C-Methylbarbituric acid 



CHMe<gg|g>CO 



Fischer, E. und DUthey, A. Liebigs 

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



368). 



Ketodihydi^opyridazine carboxylic 

 acid 



Ethyl eater of the 4-imino derivative 



,N- 



^CH. 



^H<co.CHfC02^>C'^^H 



Baron, IL, Remfry, F. Vx. P. and 

 Thorpe, J. F. [Ethyl 4-imino-G-keto- 

 1 : r)-dihydropyridazine-5- carboxylate, 

 and its hydrochloride and hvdrazone.] 

 London, J. Chem. Soc, 85, 1904, (1726- 

 1761). 



CYCLOID CHON. 

 Ethylimideaz clone 



CEt— AV r, r T. 



CH.NH>^-^^" 



Kolshom, E. Berlin, Ber. D. chem. 

 (irs., 37, 11104,(2474-2486). 



CYCLOID C6H4O4N2 



Pyrimidine 5, 6 dicarboxylic acid. 



Gabriel, S. und Colman, .1. Berlin, 

 Ber. D. chem. Ges.,37, 1904, (3643- 

 3656). 



CYCLOID C6H6O4N3 



Glutazine carboxylic acid 



Ethyl esteh 



^^^CO.ClI(CO.,Et)'^^ • ^ ^^ 



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

 Thorpe, J. F. [Ethyl gliitazinecar- 

 boxylate, and its hydrochloride, oxime, 

 and dibenzoyl derivative.] London, J, 

 Chem. Soc, "85, 1904, (1726-1761). 



