Cycloids containing nitrogen. 



771 



1934 



aldehydes on C-dinietlivltetrazoline. I.e. ; 

 Cambridge, Proc. riill. Soc, 13, 1900, 

 (316-317). 



CYCLOID C5HU1N4 



Trimethyltetrazoline 



Ruehmann, S. [The hydriodide, 

 periodide, hydrochloride, platlnichloride, 

 and auricldoride of trimethvltetrazoline.] 

 London, J. Chem. Soc, 89," 1006, (12C8- 

 1273) ; [abstract] London, Proc. Clieni. 

 Soc, 22, 1906, (238). 



CYCLOID CcHsN^ 



s-Metliylpurine 

 N =CH.C.NH 



Isay, 0. Berlin, Ber. D. chem. Ges., 

 39, 1906, (250-265). 



CYCLOID C„HioN4 



l,l-N,N-Triazole-2,5-(limethyl- 

 pyrrole 



N : CH CMe : CH 



N:CH^^ ■* ^CMe:CH 

 Btilow, C. i.e. (-1106-4109). 



CYCLOID CuHioN4 



Diphenyltetrazine 



Dl-p-BROMODII'IIENYLTETIt.\ZINE 



BrCeH4-C<^^T ; g>C.CeH4Br 



StoU^, R. und Weindel, A. J. prakt. 

 Chem., Leipzig, (N.F.), 74, 1906, (1-12). 



CYCLOID CuHi2N4 



Diphenyl-v-dihydrotetrazine 



and the monobenzoyl derivative. 



StoUe', II. op. cit. 73, 1906, (277- 

 300). 



DlBROMOPHEXYL DERIVATIVE Ci4HioN4Br2 

 also DI-p-I5R0M0DiriIENYL-S-DIHYI)E0TETRA- 



ziNE and their dibeszoyl derivatives. 



Stolid, R. und Weindel, A. op. ch. 

 74, 1906, (1-12). 



CYCLOID CuHhN4 



p-Phenylenedi 5 methyldipyrazole 



Berend, L. und Harms, P. i.e. (112- 

 Ul). 



CYCLOID C,sH,2N4 



Azine 



N : CH.O.N : CPh 



CH: N.*C.N:CPh 



Isay, 0. Berlin, Ber. D. chem. Ges., 

 39, 1906, (250-265). 



CYCLOID C,3H,2N4 



Homofluorindine 



C6H4<^|>CeH2<5J->CeH4 



Leicester, J. [Preparation of homo- 

 fluorindine from quinonehomofluorin- 

 dine.] London, Proc. Chem. Soc, 22, 

 1906, (41). 



CYCLOID C;iH,8N4 



l-Benzyl-4-phenylendanilodiliydro- 

 triazole 

 N = C 



C,H,.N .C H 



>NPh>NPh 



Busch, M. nnd Brandt, 11. J. prakt. 

 Chem., Leipzig, (N.F.), 74, 1906, (533- 

 546). 



CYCLOID C,4HisN4 



a- and y8-Naphthylplienyl-endanilo- 

 dihydrotriazole 



Busch, M. luid Brandt, H. I.e. 



CYCLOID C26H,4N4 



/8-Quinacridazine-3,4. 



Niementowski, St. von. Berlin, Ber. 

 D. chem. Ges., 39, 1906, (385-392). 



CYCLOID C27H22N4 



Benzyldiphenylendanilodiliy- 

 drotriazole. 



Busch, ]\I. iiml Brandt, H. J. prakt. 

 Chem., Leipzig, i^N.F.), 74, 1906, (533- 

 546). 



CYCLOIDS CONTAINING FOUR 



NITROGEN ATOMS AND OXYGEN. 



CYCLOID C4H2O4N4 



l,2,4,5-Tetrazine-3,6-dicarboxylic 



acid and the Amide C4H402Ne 

 NH2.C0.C<^T : ^'>C.C0.NH2 



Curtius, Th., Darapsky, A. und 

 MuUer, E. Berlin, Ber. D. chem. Ges., 

 39, 1906, (3410-3437). 



