Cycloids containing nitrogen. 846 



CYCLOID C,eHic04N2 



i,:5-Diphenylalloxan 



1932 



co< 



NPh.CO 

 NPh.CO 



>co 



Hydrazones. 



WMteley. [1 : 3-Diphenylalloxnii 



pheiiylhydrazone, p-nitropheuylhydra- 

 zone," phenylmethylhydrazone, diiDlienyl- 

 bydrazone, and pbenVlbenzylhydrazone. 

 J.C, 91, (1330). 



CYCLOIDS Ci6Hi203N2 



1,3-Diplienylbarbituric acid 



WMteley. 1 :3-Diplieny]barbitm-ic acid 

 and some coloured derivatives. [5 :5- 

 Dibromo-, S-i-sonitroso-, 5-amino-, 5- 

 benzylidene-, 5-benzyl-, 5-cinnamyli- 

 dene-, 5-dipbenylnietbyleDe-, and 5- 

 dipbenylmetbyl-derivatives.] J.C, 91, 

 (1330). 



3-Phenyl--'-methyl-i-ketodihydro- 

 quinazoline n-carboxylic acid 



C02H.C6H3<^' • ^'^^'^ 

 ' ' CO.NPb 



and tbe isomeric 7-carbOXylic acid. 



Bogert, Wiggin & Sinclair. Am. Soc, 

 29, (82). 



3-Oxy-phenylmethylquinoxaline 

 carboxylic acid 



■ CeH3Me<N^9-CBH.CO,H 

 ' ' N : C.OH 



and its lactoxe. 

 Manuelli e MaseUi, C. G., 35, (572). 



CYCLOIDS CibHhON. 



Diphenyl-N-methylglyoxalone 



PbC: . NMe^(^Q 

 PhC . NH 

 and the monoacetate. 

 Biltz, H. B., 40, (4799j. 



Methylquindolanol 



C6H4< 



.C(OHj.NMe^CeH, 

 Ntl.C— CH 



PhN<^ 



l-Phenyl-3-benzylpyraz olone 



~N = C.CH,Pb 



4-CyANO-DERIVATIVE 



,CO.CH.CN 



PhN< 



N=-C.CH2Ph 



Smith & Thorpe, J. F. J.C, 91, 



(1899). 



CYCLOID C16H20O2N2 



4,G-Diketo-2-cinnamyl-').r)-diethyl- 

 hexahydropyrimidine 



CEt2<gg-5JJJ>CPI.CH : CHPh 



and its diacetvl derivative. 

 Burrows & Keane, C. A. J.C, 91, 



(2fi!)). 



CYCLOID C,7Hi,02N2 



3,0-Diphenylpyridazine 4-carboxylic 

 acid 



Ph2.C4llN2.CO2H 



and the ethyl ester. 

 Paal u. Kuhn, G. P>., 40, (4598). 



CYCLOID C17H14O2N2 



3,G-Diphenyl-dihydropyridazine 

 4-carboxylic acid 



Ph2.C4H3N2.CO2H 

 and the ethyl ester. 

 Paal u. Kuhn, G. B., 40, (4598). 



CYCLOID C17H1CON2 



Diphenyl-N,N'-dimethylglyoxalone 



PhCNAIe. 

 PhC.NMe' 

 Biltz, H. B., 40, (4799). 



^>C0 



PbN<^^ 



Fichter u. Probst, H. B., 40, (3478). 



CYCLOID CbHisONz 



l-Phenyl-3-benzylethylpyrazolone 



CO.CHEt 

 N=C.CH2Ph 



4-CyANO-DEI! I V ative. 



Smith & Thorpe, J. F. J.C, 91, 



(1899). 



CYCLOID C18H18O4N2 



1-Tyrosineanhydride. 

 Fischer u. Schrauth, W. A., 354, (21). 



