Cycloids containing nitrogen. 852 



ISONITROSOAMIXODIIIYDROTETRAZINE 



NH2.C<JJ;^jj>C:N.0H 



Wieland u. Bauer, H. B., 40, (1680). 



CYCLOID C,3Hh,N« 



1 ,3-Diphenyltetrazole 



N : CPh 



Also BROMOmrHENYLTETRAZOLE. 



Dimrotli w. Merzbacher, S. B., 40, 

 (2402j. 



CYCLOID C2nH2„N4 



,3-Naphthylene-di-3,5-dimethyl- 



pyrazole. 

 Franzen. J. pr., 76, (205;. 



CYCLOID C24H,6N4 



l-Phenyl-3-methyl- i , ')-phenanthra- 

 zine pyrazole 



CMe.C.N : C.C'eH^ 

 Michaelis u. Kopstock, H. A.., 354, 

 (102). 



CYCLOID C30H24N4 



2,3-Naphthylene-di-3-methyl- 

 5-plienylpyrazole. 

 Franzen. J. jjr., 76, (205). 



CYCLOID C36H30N4 



p-Phenylene-bis-1 ,4-diphenyl-3, 

 5-pyrazoline 



CeH4(CH<^'«-CP'0 

 \ NPh.N /j 



Lendenfeld, H. v. M., 27, (969). 



CYCLOIDS CONTAINING FOUR 

 NITROGEN ATOMS AND OXYGEN. 



CYCLOID C4H4O4N4 



Bisdiazoacetic acid 



C02H.C<^jj- |jj>C.C03H 



and the acid hydrazine. 

 Curtius. B., 40, (1176). 



CYCLOID C4H6O2N4 



Acetylenediureine 



(,^ NH.UH.NH (,Q 



NH.CH.NH 

 and the tetra-acetate. 

 BUtz, H. B., 40, (4806). 



1934 



CYCLOIDS C7H3O2N4 



3,7-Dimethylxanthine 



Salicylate and gallate. 



Also the GALLATE of 1,3-dimethyl- 



xantliine. 

 Brissemoret. l'.!., 35, (316). 



CYCLOIDS C7H10ON4 



1 ,3-Dimethyl-desoxyxantiiine 



(Deso.ri/t h CO pi/ ]jll Die) 



also 1,7-dimethyl desoxyxanthine 



(Deso.i'upu raxcintJi i ne) 

 Tafel u. Dodt, J. B., 40, (3752). 



CYCLOID C8Hi(,02N4 



Caffeine 



Salicylate, protocatechuate and 



GALLATE. 



Brissemoret. BL, 35, (316). 

 CYCLOID C,2Hi202N4 



2,6-Dimethyl-l,'S-dioxy-9, 1 0-dihydro- 

 3,5,7-naphthatetrazine 



N.C(OH) : C.CHj.C : N.CjVW ^^ 

 CMe. N : C.CHj. C : C(OH) 

 Bogert & Dox. Am. Soc, 27, (1302). 



CYCLOID CeHnOaN* 



Diplienylacetylenediureine 



NH.CPh.NH 

 and the diacetate. 

 BUtz, H. B., 40, (4806). 



CYCLOID C,7Hi203N4 



1,3-Diplienyluric acid 



NPh.CO.C.NH 



>C0 



CO.NPh.C.NH 

 Whiteley. [Synthesis]. J.C, 91,(1330). 



CYCLOID C,9HiaON4 



Phenylpyrazoline ketone 



C()(C3H4X2P102 



Azzarello. 43884. 



CYCLOID C,8H2d02N4 



2,3-Naplitliylene-di-3-plienyl 

 pyrazolone 



and its isonitroso compound. 



Franzen. J. pr., 76, (205). 



