Cycloids containing nitrogen. 021 



CYCLOID CioHON. 



^-Phenylpyrazole 3-carboxylic 

 acid 



and the hydrazide 



Biilow, C. Berlin. Ber. D. cliem. Ges., 

 37, 1901, (2 198-2209 j. 



CYCLOID CoHiONj 



4-Keto-2-ethyldihydroquinazoline 



6, 8-DlBROMO DEKIVATIVK 



Bogert, M. T. unci Hand, W. F. J. 



Amer. Chem. Soc, Easton, Pa., 25, 1903, 

 (935-9^7). 



CYCLOIDS C,oH,o02N2 



Phenylmethylhydantoins 



pi.N-<;':^:;:™<' ,.K, ptN-<^'°?"' 



CO.NH CO.NMe 



Delepine, M. Paris, C.-R. Acad, sci., 

 137, llMi;j, (1257-1259.). 



1930 



CYCLOID CirHifONj 



4-Ethyl-3 H-amyl-pyrazolone 



EtCH.CO' 



Locquin, Rene. Paris, Bui. soc. 

 chim., (ser. 3), 31, 1904, (595-599). 



>XH 



l-L'l!AMIDO DERIVATIVE 



Bailey, J. R. J. Amer. Chem. Soc. 

 Easton, Pa., 26, 1904, (1006-1026). 



CYCLOID CoHizONz 



Phenylmethylpyrazolidone 



^,,. NH.CilMr 



Prentice, B. [The action of l)ariuni 

 hydroxide on l-phenyl-3-methyl-5-pyra- 

 zolidone.] London, J. Chem. Soc, 85, 

 1904, (1667-1672); [abstract] London 

 Proc. Chem. Soc, 20, 1904, (220). 



CYCLOID C, Hi.O N, 



C Dipropyl-barbituric acid. 

 Fischer, E. und Dilthey, A. Liebigs 

 Ann. Chem., Leipzig, 335, 1904, (334- 

 368). 



CYCLOID CuHsO :N2 



Anhydride of Carboxyphenyl- 

 methyl-pyrazolone. 



Michaelis, A. und Eisenschmidt, C. 

 Berlin, Ber. D. chem. Ges., 37, 1904, 

 (2228-2231). 



CYCLOID CnHioOzNz 



o-Carboxyphenylmethylpyrazole 



CllLORii DERIVATIVE 



CMe:N 



CH : ccr 



Michaelis, A. und Eisenschmidt, C. 

 Berlin, Ber. D. chem. Ges., 37, 1904, 

 (2228-2231). 



.>N.C6H4C02H 



CYCLOIDS CuHi ON2 



l-Phenyl-4, 4-dimethylpyrazoIone 



Blaise, E. E. et Marcilly, L. Paris, 

 I5ul. soc. chim., (ser. 3), 31. 1904, (160- 

 170). 



Antipyrine 



xVnTIPVRINE AMINO.iCETA.MIDE 

 ,_, CO. C.NH.CH2.CO.NH2 



^^^^<XMe.CMe 



Liuni^re, A. L. et Perrin, F. Paris. 

 Bui. soc. chim., (ser. 3), 29, 1903, (966- 

 968). 



u-and-iso-Propyl-keto-dihydroquin- 

 azoline 



6, S-D1BUO.MO DERIVATIVES 



N : C.C3EI7 



Bogert, M. T. und Hand, W. F. J. 

 Amer. Chem. Soc, Easton, Pa ,,25, 1903, 

 (935-947). 



