Cycloids containing nitrogen- 7 



CYCLOID C3;H45N4 



3, G-Diliexyl-i. -, 4. 5-tetraphenyl- 

 hexahydro-l, -', 4, 5-tetrazine 



Rassow n. Baumann. J.pr., 80, (515). 



CYCLOIDS CONTAINING FOUR 



NITROGEN ATOMS AND OXYGEN. 



CYCLOID C2H4O2N4 



P-Urazine t'0<^'{J-^-g>CO 



Chattaway. 05046. [Synthesis from 

 carlwmide ] 



CYCLOID C4H O4N4 



1, -, 4, 5-Teti'azine 3, G-dicarb- 

 oxylic acid. 

 Methylamide, ethylamide and piperidide. 

 MuUer, E. B., 42, f.3283)- 



CYCLOID C4H4O4N4 



Dihydro-1, -, 4, 5-tetrazine 

 3, 0-dicarboxylic acid- 



DIETHYLAMIDE 



XfIire.CO.C<Jjj^g>C.CO.Xmie 



Also tlie ETHYLAMIDE, HEPTYLAMIDE, DI- 

 METHYLAMIDE aud PIPERIDIDE. 



MuUer, E. B., 42, (3:^76). 



CYCLOID C4H60,N4 



N-Methyl-C, N-dihydro-l, 2, 4, 5- 

 tetrazine 3, dicarboxylic acid. 



Amide. 

 Curtius, Darapsky u. Miiller. B., 42, 



(3288,1. 



CYCLOID C5H,;04N4 



N-Ethyl-C. N-dihydro-l, 2, 4, 5- 

 tetrazine 3, i:-dicarboxylic acid. 



Amiue. 

 Curtius, Darapsky u. Miiller. B,, 42, 

 (3289). 



CYCLOIDS CeH ON4 



4-0xy-6-methyl-2, 3-triazo-7, 

 o-pyridazine 



CMe : X X . CtLx 



CII : C(OH)— C :N 

 Bulow, C. B., 42, (2597). 



1934 



-Methyl- 1, 3-triazo-7, ■ . -pyrimidine- 



4-hydroxylic acid. 

 Biilow, C. u. Haas, K. B., 42, (4642;. 



CYCLOID CeHeOzN, 



1-Methylxanthine. 



SuHthesh. 

 Englemann. M. B., 42, 177 . 



CYCLOID CtHsONi 



Benzoxytetrazole PliC 



N(OH).N 



^X- 



Wieland, H. 1!., 42, (4203) 



CYCLOID C7HSON4 



4-Oxy-'), 6 dimethyl-2, 3-triazo-7, 

 "-pyridazine 



CMe : X X . CH^ 



CMc : C(OPr).(J : X / 

 Bulow, C. B., 42, (25i)9). 



CYCLOID CHioON* 



•"-Ethyl-ii-methyl-i,3-triazo-7,o'- 



pyrimidine-4 hydroxylic acid. 



Bulow, C. II. Haas, K. P.., 42, (4643) 



CYCLOID C.Hi ON4 



Triazole-a.a-lutidone 



^^:^^«>X.N<''''^^-^'«>CO 

 X : CH CMe : CH 



Bulow, C. B., 42, (2493). 



CYCLOID C,oH,n04N4 



Triazoledimetliylpyrrole dicarb- 

 oxylic acid 



X : CH. .CMe : C.CO^H 



i >n.n/ I 



X : CBK \CMe : C.CO2H 



Bulow, C. B., 42, (2491). 



CYCLOID CnH,0N4 



4-0xy-i'-phenyI-2,.; triazo- 

 7.IJ pyiidazine- 

 Bulow, C B., 42, (2601). 



CYCLOID C,4Hk02N4 



Diphenylurazine 

 Rolla. G., 38, i, (327j. 



