Cycloids containing nitrogen. ^(j1 



1932 



CYCLOID CJH,0:N2 



Dioxyethylpyriniidine 



DlOXYAMIXUEmVUniilMIDIXE 



Johnson, T. B. and Jolins, C. 0. J. 

 Biol. Chem., New York, 1, 1906, (305- 

 318). 



CYCLOID CHifOjNj 



cis-Diinethyldiketopiperazine 



( d- Alanine anhydride). 



Fischer, E. Berlin, Ber. D. chem. 

 c;es.,39, 1906, (■453-174). 



tvixn^' AlanhiP anhijdr'ide. 



Fischer, E. and Raske, K. t.c. (3981- 

 3995). 



CYCLOID C6H,c04N2 



1-Serine anhydride- 

 Fischer, E. und Jacobs, W. A. t.c, 

 (2912-2950). 



CYCLOID CtHsONz 



o-Phenyleneurea 



P-Chloro derivative 



C,H3C1<|{J>C0 



Fischer, O. undLimmer, E. J. prakt. 

 Chem., Leipzig, (N.F.), 74, 1906,(57-73). 



CYCLOID C3H3ON2 



5-Phenylpyrazolone 



5-PHEXYLrYRAZOLOSEI.MINE 



.NH . C : NH 



■^CPh : CH 



Moureu, Ch. et Lazennec, I. Paris, 

 C.-R. Acad, sci., 143, 1906, (1239-12i2). 



XH<' 



CYCLOID C8H14ON2 



5-Amyl-3-pyrazolone 



5-AMYL-3-PYRAZOLONEIMIXE. 



,NH C:NH 



^CfCsHji) : CH 

 Moureu, Ch. et Lazennec, I. I.e. 



NH<' 



CYCLOID CciH,402N2 



1- Leucylglycineanhydride 



C4H9.CH-<QQ ]s; jj^CHj 



Fischer, G. Berlin, Ber. D. chem. 

 Ges., 39, 1906, (2893-2931). 



CYCLOID CgHsONa 



a-Methyl-i8-keto-a,j3-dihydroquin- 

 oxaline 

 C,H4<^=CH 

 NMe.CO 



Kuhling-, 0. und Kaselitz, 0. t.e. 

 (1314-1326). 



CYCLOIDS C9HSO2N2 



0-Phenylenemalonamide 



Meyer, R. Liebigs Ann. Chem., Leip- 

 zig, 347, 1906, (17-54). 



c-Phenylhydantoin 



PhCH.NH (-,^ 

 CO. NH 

 and the dromo, amino, anilido and oxy 



DERIVATIVES. 



Gabriel, S. op. cit. 350, 1906, (118- 

 134). 



Oxy-l-phenyl-3-5.pyrazolone 



4-AMiyo derivative 

 ^ NPh. CO 

 ^C(OH).CH.NHj 



Conrad, M. und Zart, A. Berlin, Ber. 

 D. chem. Ges., 39, 1906, (2282-2288). 



CYCLOID C9H16O2N2 



1-Leucyl-d- alanine anhydride 

 C,Hg.ClI<^!JJ-^'g>CHMe 

 Fischer, E. t.e. (2893-2931). 

 CYCLOIDS CioHioONz 



l-Phenyl-5-methyl-3-pyrazolone. 



The 4-siTRO, AMINO and nitroso deriva- 

 tives ; 



condensation products with aldehydes 

 and ketones and other derivatives. 



Michaelis, A. Liebigs Ann. Chem., 

 Leipzig, 350, 1906, (288-329). 



5-Benzylpyrazolone 



5-Benzyl-3-i'yrazoloneimine 



NH C:NH 



C(C,H7) : CH 



Moureu, Ch. et Lazennec, I. Paris, 

 C.-R. Acad, sci., 143, 1906, (12.39-1242). 



