Cycloids containing nitrogen. 



5-Methyl-i'-pyridazinone 

 ."-carboxylic acid 



^^'•^^<CH2".C.("C02II)> 

 Blaise et Gault. Bl.. 9, (163). 



CYCLOID CHirO.Nj 



4 : 5-Dimethyl- 1 : ''-dioxyliydrouracil- 



Kircher. A., 385. i SUM. 



CYCLOID C.HkON: 



o-Methyl---ethyl-"-pyrazolidone 



l-A(froso derivative. 

 Muckermann. J. \>r., 84, (288). 



CYCLOID CtHmO'Nz 



3:4: r.-Trimethyluracil- 

 Kircher. A., 385, (305 j. 



CYCLOID CHr.ON, 



tert-Butyloxyimidazole 

 NH<C(OH)=N 

 C'C:\le3):CH 

 Widman u. Wahlberg. 91182. 



CYCLOID CeHaONs 



Methylbenzimidazolone 



C,U3Me<^-[J>CU 



and the diacetyl derivative. 

 Elbs. J. pr., 83, (17). 



CYCLOIDS CHhOiNi 



1-Methyl-i and 3-allyluracil- 

 BUckendorfif. A., 385, SiT),. 



CYCLOIDS CeHi202N2 



1:3:4: 5 Tetramethyluracil- 

 Kircher. .A., 385, (30 ti. 



4 -Methyl- 1 and 3-propyluracil. 

 BUckendorff. A., 385, (322). 



3:5.- 6-Trimethyl- 1 : ''-diliydropyri- 

 dazine i-carboxylic acid 



■ Ethyl ester. 

 Korschun e RoU. G., 41, i (186). 



1932 



CYCLOID CaH60N2 



l-Phenyl-y-oxypyi'azole 



3-Ethylilijo.<-ijl(itcplu'utjlliiiiIrazone and 

 3-et]njlglijo.TylaletolijIli>jdvazone. 

 BUlow u. Goller. B., 44, (2840). 



CYCLOID CHjO.Nj 



Methyl'sobenzoylenecarbamide 



X'U .N 

 -NH.C.O.Me 

 McKee. .). pr., 84, (823). 



C6H4< 



CYCLOID C.HkON: 



ri-Phenyl-3 pyrazolidone 



\-Xitroso compound 

 ,NH . CO 

 ^CHPh.CHj 

 Muckermann. J. pr., 83, (530). 



ON.N<' 



CYCLOIDS C9Hii02N2 



1 : 4-Dimethyl-3-allyluracil 

 3 : 4-Dimetliyl-i-allyluracil 

 BUckendorff. A., 385. ,;i2t;i. 



CYCLOIDS Cr.HLiOzNj 



a and iS-isoButylmethyluracU- 

 BUckendorff. A., 385, (326). 



1 : 4.Dimethyl-3-propyluracil 

 3 :4-Dimethyl-i propyluracil- 



BUckendorff. A., 385, 324j. 



2-Methy]-4 : r,-diketo •>diethyltetra- 

 hydropyiimidine 



Freund n. Reischer. A., 379, (30). 



2-Methyl-4-oxy 5-diethylketo- 

 diliydropyiimidine 



Freund u. Fleischer. A., 379, (31). 

 CYCLOID CsHnOjNi 



/sohexylparabanic acid 



Also DIISOHEXYL-1'ARAHANIC AOID. 



Kaluza. 143. 



