Cycloids containing nitrogen. 724 



CYCLOID CsHhNzS 



3-Phenyl-n-methyl -I'-thio-l : 2 : 3 : 4- 

 tetrahydroquinazoline 

 /NH.CS 

 CeH3Me< | 



^CHj. NPh 



Seiiier & Shepheard. 71053. 

 CYCLOIDS CiiHigNzS 



3-0- uml -/--Tolyl-ti-methyl -'-thio- 

 1:2:3: 4-tetrahydroquinazolines 



/XH . CS 



'^CHj.N.CeH^Me 

 Senier & Slieplieard. 71053. 



CYCLOIDS WITH TWO NITROGEN 

 ATOMS, OXYGEN AND SULPHUR. 



CYCLOID C4H3O3N3S 



Thiovioluric acid 



Isherwood. 67489. 



CYCLOID CisHijONvS 



5,5-Diphenylthiohydantoin 



/NH.CPh^ 

 CS< I 



\nh.co 



BUtz, H. B., 42, (1795). 



CYCLOID CicHioOsNjS 



1 : 3-Diphenyl-2-thioaIloxan 



Phenyl- and p-nitrophenyl-hydrazone 



WMteley & Mountain. 72307. 

 CYCLOID CieHuOaNjS 



1 : 3-Diphenylthiovioluric acid 

 Istierwood. (57489. 



CYCLOID CieHi.O^NsS 



1 : 3-Diplienyl-2-thiobarbituric acid 



,-,^ .xrh.co...^,,Ti 



^'^<Xl'li.CO>^^^ 

 Isherwood. G7489. 



1932 



CYCLOIDS CoHitON S 



5,5-Diphenyl-i' and 3-methyltliio- 

 hydantoins- 



Biltz, H. B., 42, ( 1790). 



CYCLOIDS CnHuONjS 



5,5-Diphenyl-2,3 and 1,3-dimethyl- 

 thiohydantoins. 



Biltz, H. B., 42, (179Sj. 



CYCLOID Ci,H,„0>N,S 



o-i.-^oPropenyl-l : "'.-diphenyl-'-thio- 

 barbituric acid 



cs<xS;:co>c^^^^^^^ 



Whiteley & Mountain. 72307. 

 CYCLOID C,,H,«02N,S 



5-i.soPropyl-i : 3-diphenyl-2-thio- 



barbituric acid. 

 WMteley & Mountain. 72307. 



CYCLOID C23H16O2N2S 



5-BenzyIidene-l : 3 diplienyl-2-tliio- 

 barbituric acid 

 ,NPh.CO, 



.^,,->C:CHPh 



also the 5-o-nitroi5Enzylidene 



DERIVATIVE. 



WMteley & Mountain. 72307. 

 CYCLOID C23H18O2N2S 



5-Benzyl-i'-3-diplienyl-2-thio- 

 barbituric acid 



and the S-benzenea/.o compound. 

 WMteley I'v: Mountain. 72307. 



CYCLOID C26H,«02N2S 



5-Cinnamylidene- 1 ' .3-diplienyl- 

 2-thiobarbituric acid 



CS<5|;];;^^;>C:L'H.Cti:CHPh 



WMteley & Mountain. 72307. 



CYCLOIDS WITH THREE 

 NITROGEN ATOMS. 

 CYCLOID C4H3O4N3 I' 



Violuric acid- 

 Donnan & Schneider. 65534. The 

 colour of aqueous solutions of violuric 

 acid. 



i 



