Cycloids containing nitrogen. 



905 



1930 



CYCLOID C:H:iON 



Piperidine oxide 

 Bexzvl and methtlpiperidixe oxides, 



also (ARBASILIDO-PIPERTDINE OXIDE. 



('sHio.N.O.CO.XHPh. 



Haase. F. iind Wolflfenstein, R. Ber- 

 lin, Ber. D. chem. Ges.. 37, 1904, (3228- 

 3238). 



CYCLOID CHsOjN 



Pyiidine carboxylic acid. 



Schroeder, Ferdioand. Ueber die 

 Hydrazide der drei Pyridiumouocarboii- 

 sauren. Phil. Diss. Basel (Ehrich), 

 1902, (VI + 48). 8vo. 



3-CbLOROPYRIDIXE ."i-CARBOXYLIC ACID 



CCl.CH : C.CO2H 

 CH . N : CH 



Peclunanii, H. von imd Mills, W. PI. 

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

 (3829-3830). 



CYCLOID C.HsOsN 



2, 4, (j-Trioxypyiidine 3-carboxylic 

 acid 



Ethyl ester. 



-^ ^^C0.CH(C02Et)^^'^ 



Baron, II., Remfry, F. G. P. and 

 Thorpe, J. F. Lnndoo, J. Chem. Soc., 

 85, IU04, 1720-17111). 



CYCLOIDS C6H;02N 



N-MetliylpyiTole a-carboxylic acid 



DiBROMO DERIVATIVE and its amide, 

 also the mono and tribromo derivatives. 



Khotinsky, E. nnd Pictet, A. Berlin, 

 Ber. I), chem. Ges., 37, 1904, (2798- 



2S02). 



Oxymethylpyridone 



^^<CH:C(OH)>'^^- 



[From ricinine^ 



Maquenne, L. et Philippe, L. Paris, 

 C.-R. Acad, sci., 138, 1004, (50-5-508). 



2. 3-DirHI.OROPYRIDINE 5-CARBOXY'LIC AilD 



CCl.CH : C.CO2H 



CCl . X : CH 



Pechmann, II. von nnd Mills, W. II. 

 loe. c'lt. 



CYCLOIDS CeHsOaN 



Pyridone carboxylic acid. 



3-BR0M()-l-AiIIN0-2-PYKIDUNE 

 5-CARliOXYI.IC ACID 



CBr :CH— C.CO2H 



C0.N(NH2).CH 

 and its mrtliyl eater and heiizylidene 

 derivative. 



Pechmann, H. von und Mills, W. H. 

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

 (3836-3841). 



Oxypyridine carboxylic acid 



ClILiiIiOOXYPYRIDlKE CARBOXYLKJ ACID 



CCl.CH : C.CO2H 

 (■(OH).N : CH 

 and its methyl ester. 



Pechmann, H. von und Mills, W. 11. 

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

 (3829-383G). 



CYCLOID CgHtO N 



Trioxymethylpyridine 



Baron, H., Remfry, F. G. P. and 

 Thorpe, J. F. [2:4: (>Trioxy-5-methyl- 

 ])vridine.] London, J. Chem. Soc, 85, 

 1904,(1726-1761^. 



CYCLOID CHnOjN 



Piperidine N-carboxylic acid, esters 

 CjHioN.CU.OCeHX'ls ; 

 CsHioN.CO.O.CeH.Br [1 : 2] and [1:4]; 

 C5HioX.CO.OCeH2Br, ; 

 C5H,oX.CO.O.C6H4X02 [1 : 2] and [1 : 4] 

 CJl.e.N.CO.O.CeHjMeBr [1:4:3] 



Bouchetal de la Roche. Paris, 



Bui. sof. ciiim., fser. 3), 29, 1903, (752- 

 756). 



CYCLOID C HvO N 



2, i, 6-Trioxy-'''-methylpyridine 



•i-carboxylic acid 



Ftiivi, ksteu 



\TH^CO CHMe^p,-) 



*^"^C0.CH(C02Et)^^^ 



Baron, II., Remfry, F. G. P. and 

 Thorpe, .1. F. London, J. Chem. Soc, 

 85, iyu4, (1726-1761). 



