1930 



CYCLOID C.Hr.OsNv 



i-Methyl-i-etliyl-3-acetylpyrazole 

 5-carboxylic acid 

 NCCA) . CAc 

 "^qCO^H) . CMe 

 and its ettiyl ester. 

 Klaees. A. und Ronneburg, A. Berlin, 

 Ber. D. cliem. Ges., 36, 1903, (112S- 

 1 132). 



CYCLOID C.Hi.ON, 



Hexylpyrazolone CeH.j . CjHjONz 

 Moureu, Ch. et Delange, R. Paris, 

 . '.-P.. Acad, sci., 136, 1903, (753-756^. 



CYCLOID C10H6O2N2 



Malonic acid benzamidide 



CuLOItO DERIVATIVE 



C.oH,02N2Cl le. 

 CHCl<ggl^|>CPh 



Ruhemann, L. London, J. Cliem. 

 ^oc, 83, 1903, (379-380). 



CYCLOIDS CioHicONz 



1 -Phenyl-5-methyl-3-pyraz clone 



CMe : CH 



KPli< 



.CMe : CH 

 ■XH . CO 



^XH .CU 

 Mayer. K. Berlin, Ber. D. chem. 

 , ,es., 36, 1903, (7 17-7 IS). 



1 -Phenyl-3-methyl-3-pyrazolone 

 CO . CH2 

 ^'P^<N :CMe 



AZOCENZENE DEEIV.\TIVE. 



Eitoner. A. Berlin, Ber. D. chem. 

 Oes., 36, 1903, (2687-2692). 



4-CHLOROrHESYLAZO, 4-BROMOPHESYLAZO 



and 4-p-METHYLBENZESEAZO 



DERIVATIVES. 



Lapwortb, A. London, J. CJem. 

 Soc 83, 1903, (1124) ; [Abstract] Proc. 

 Chem. Soc, 19, 1903, (149>. 



CYCLOIDS C10H10O2N2 



3-Phenyl-7-methyMiydantoin 

 X'Ph . CH2 

 *^^^NMe . CO 

 Frerichs. G. and Breustedt 0. 



.7 prakt. Clieni., Leipzig, (N.F.J, bb, 

 (1102, (231-2611. 



1930 



»H-Tolyl-hydantoin 



N(C,H,).CH2 



^^<NH CO 



and its bromo derivative. 

 Frerichs, G. und Breustedt, G. 



•T. prakt Chem., Leipzig, (N.F.), 66, 

 1902, (231-261). 



1 -Phenyl 3-metliyl-4, 5-diketo- 

 pyrazolidine 



Piethyi-amiko derivative. 

 MeC(NEt).NH^^p^ 

 CO . CO — 

 Prager, B. Berlin, Ber. D. chem. 

 Ges., 36, 1903, (1451-1459). 



CYCLOID C1CH1CO3N2 



i>' Oxyphenyl methyl-hydantoin 

 Ethyl ether 



CH CO 



C6H,(0Et)N<^Q^-^,^j^ 



Frerichs, G. tnid Breustedt, G. 

 J. prakt. Chem., Leipzig, (X.F.), 66, 

 1902, (231-261). 



CYCLOID Ci HnON2 



Dimethyltolunidazolol 



Nitro derivative 

 X0,.C,H,Me<|5i>CH.0H 



Fischer, 0. nnd Hess, W. Berlin, 

 Ber. D. chem. Ges., 36, 1903, (3967- 

 3974). 



CYCLOID CnHB02N2 



3-Phenylpyridazine e-carboxyUc 

 acid 



CPh<gH^^|>C.CO,H 



Paal, C. und Dencks, E. Berlin, Ber. 

 D. chem. Ges., 36, 1903, (491-497). 



CYCLOID C11H10O4N2 



7-Phenylliydantoin-«-acetic acid 



,C0 . CH . CH2 . CO2H 



'cO . NH 

 and its ethyl ester. 

 Paal, C. nnd Zitelmann, G. Berlin, 

 Ber. D. chem. Ges., 36, 1903, (oS-a.- 

 3345). 



♦ 



