Cycloids containing nitrogen. 712 



1931 



CYCLOIDS CeHnN 



3' : 1-Methylisopropylcarbazole 



Lux. 87158. 288. 



Pr-i-n-Methyl-3 : 3-dimethyl-2- 

 methylene-a naphthindoline 



Zangerle. 91434. 



CYCLOID Cj.HhNX 



Phenylacridonium salts 



( Pl,C<^*>NH \x 



Hantzsch. B., 44. (1809). 



CYCLOID CjoHieNX 



Methylphenylacridonium salts 

 (ri,c;<ai.>N-M,.)x 



Hantzsch. H., 44, (1810\ 

 CYCLOID C uHkN 



lO-Methyl-'.*-phenylacridane 



U cijdiiu coDiputniJ. 

 Kaufmann u. Albertini. 15., 44, (2063). 



CYCLOID C oHjrNX 



Toluylphenyllutidinium 



jjercJiloratc. 

 Baeyer u. Piccard. A., 384, (219). 



CYCLOIDS WITH ONE NITROGEN 

 ATOM AND OXYGEN. 



CYCLOID CHsOjN 



Tetramic acid ('U,<^''^")=^^ 

 ■ Sil . CO 



and the isonitroHo derivative. 

 Senary. B, 44, M7fi4). 



CYCLOID C5H3O3N 



Pyromecazone 



CU: N CU 



CH.C(OH).(JO 

 Peratoner. C, 41, ii, filOi. 



CYCLOID CsHsOjN 



2 : o-Dioxy-4-pyridone 



I Pyromecazonic acidj. 

 Peratoner et alii. (Jr., 41, ii, (619). 



CYCLOIDS C5H5O4N 



Tetram-a-carboxylic acid 

 ch/ I 



\NH .CO 



Senary. H.. 44, (176;^). 



1:2: 3-Trioxy-4 pyridone 



{Oxypi/Toiiiecazoitic (icid). 

 Peratoner. G., 41, ii, (619). 



CYCLOID C HOsN 



Pyrrolidone carboxylic acid 



Etliyl ami methyl esters. 

 Fischer u. Boehner. B., 44, (1332). 



CYCLOID CsHsOiN 



Proline- 



Fischer 11. Zeinplen. 84224. Synthese 

 (les diopti.scli wirksaiiien Prolins. 



(Uugar.) 



CYCLOID C6H5O5N 



1 : 2-Dioxy-4 pyridone n carboxylic 



acid- Monoethyl ether. 

 Peratoner. G., 41, ii, (019). 



CYCLOID CsHtOzN 



a-Methylpyrrole 3-carboxylic acid 



Etiiyl c.fler. 

 Senary. B., 44, (495). 



CYCLOID C;H,,ON, 



/ew-Butyloxyiniidazole 



CMe3.C<^'"-^: 



XH.C.OH 



Widman u. Wahlherg. B., 44, (207 1). 

 CYCLOID C8H5O2N 



Isatin- 



fi-Benzoylplienylhydrazone 



&-A cetylpheiiylhyd razone 



X-Be.nzoylis.\tin-o and )3-PiiENyi.uYDRA- 



ZONKS. 



Auwers u. Boennecke. A , 381, (303). 



CYCLOIDS CHiiON 

 N - Propyl-a-pyridone - 

 Decker u. Kaufmann. .1. \n\, 84, 

 (437). 



