Cycloids containing nitrogen. 749 



1931 



CYCLOID C.H,04N 



Citrazinic acid 



(2 : Q-dioxypyridlne i-carhoxylic ncid) 



CO,H.C<gf;gOH)^N 



Rog'erson, H. and Thorpe, J. F. A. 

 mode of formation of acouitic acid and 

 citrazinic acid, and of their alkyl deri- 

 vatives, with remarks on the constitution 

 of aconitic acid. London, J. Chem. Soc, 

 89, 1906, (031-652) ; [abstract] London, 

 Proc. Chem. Soc, 22, 1906, (87). 



CYCLOIDS C7H7O4N 



Methylcitrazinic acids. 



2 : 6-Dioxy-5-methylpyridine 



1-carboxylic acid 



CO.H.C<«I«_§OH.>^ 



and its diacetvl derivative. 



2 : 6-Dioxy-3-methylpyridine 



4-carboxylic acid 



en n^CH=C(OH)-. ^ 



and its ethyl ester. 



Rogerson, H. and Thorpe, J. F. 

 London, J. Chem. Soc, 89, 1906, (631- 

 652). 



CYCLOID CSH5O4N 



Dioxyphthalimide. 



The DiBROMo, Diciii.ORo and dimethyl 



DEIUVATIVES. 



Thiele, J. und Gunthner, Fr. Liebigs 

 Ann. Chem., Leipzig, 349,1906,(45-66). 



CYCLOID C8H9O2N 



2,5-DimethylpyiTole 3,4-dicarboxylic 

 acid 



Diethyl esteb. 



'N-P]icni/lt]uourea and '^-phenijl-a- 



metliylthiourea cleriratives. 



Btilow, C. nnd Santermeister, C. 

 Berlin, Ber. D. cliem. Lies., 39, 1906, 

 (647-651). 



CYCLOID C8H9O4N 



Dimethylcitrazinic acid 



(2 : Q-Dioxy-3 : 5-dimetltylpyrultne 4- 

 carhoxylie acid). 

 (D-6534) 



Rogerson, H. and Thorpe, J. F. 



London, J. Chem. Soc, 89. 1906, (631- 

 652). 



CYCLOID CsH.tON 



7-Oxypropylpiperidine. 



7-.M ethyl COMl'OUND 

 C5H10N.ECH2L.OCH3 



Gabriel, S. und Colman, J. Berlin, 

 Ber. D. cliem. Lies., 39, 1906, (2875- 

 2888). 



CYCLOID CHuOjN 



Trimethylol-a-picoline 



CsH.N.CiCH^.OH), 

 and its scdts and esters. 

 Lipp, A undZimglW, E. t.c. (1045- 

 1054). 



CYCLOID C10H7ON 



o-Quinoline aldehyde 



Ana-NiTRO derivative. 

 Howitz, J. und Nother, P. t.e. (2705- 

 2713). 



CYCLOIDS C10H7O2N 



Quinaldinic acid. 



Chloride, amide, 51 ethyl ester and 



MONONITRO derivative. 



Besthorn, E. und Ibele, J. t.c. (2329- 

 2334). 



Cinchonic acid. 



a-ClILOBOCINXIIONlC ACID 



C(C02H) : CH 

 C6H4<j^ C.Cl 



The chloride, amide and anilide. 

 Mulert, E. t.c. (1901-1908). 



CYCLOID C10H17O2N 



N-Methylmeroquinene 



and the nitrile and ethyl ester. 



Rabe, P. Liebigs Ann. Chem., Leip- 

 zig, 350, 1906, (180-203). 



CYCLOID C10H19ON 



Piperidinoethyl ethyl ketone 



Et.CO.CH^.CH^.CsHioN 



Blaise, E. E. et Maire, M. Paris, 

 C.-R. Acad, sci., 142, 1906, (215-217). 



3 c 



