Mixed Cycloids. 



(573 



1912 



CYCLOID CmHuO* 



Anhydroresorcinolacenaphth enone 



I >0rCV,H3-0H],0 

 CO—/ 

 Zsuffa. B, 43, (292]). 



CYCLOIDS WITH FIVE OXYGEN 

 ATOMS. 



CYCLOID C,H40s 



a-Carbamino-tetronic acid 



/L(OH):C.0O.NHj 

 CH3/ I 



\0 CO 



Senary. 15., 43, [11)43). 



CYCLOID CsH.oOs 



Trioxy- 1 -benzoyl-coumarone 



2' : 4' : .1'- TitLMiCTiivi, coMroUND. 

 Reigrodski u Tambor. 15., 43, 



(UlC-l). 



CYCLOID CoHhOs 



3 : fi-Dioxyphenylxanthonium 

 carboxylic acid 



Salts of tlie methyl eater of the dimetliijl 

 ether ciud of other ethers. 

 Kehrmann. A., 372, (3i'i;). 



CYCLOID C2,H,40s 



Hydroquinonephthalein 

 Kehrmann. A., 372, (332). 



CYCLOID C22H,r05 



Toluhydroctuinonephthalein 

 Kehrmann. A., 372, (331). 



CYCLOIDS WITH SIX 

 ATOMS. 



OXYOEN 



CYCLOID CbHioOb 



7-Metliylparaconic-acetic acid 



CIl.Me. CHC'0.,H 

 6.CO.CH.CII2.CO2H 

 and its diethyl esier. 

 Fichter 11. Probst. A., 372, (73). 



CYCLOID C15H10O6 



Tetraoxybenzylidenecoumaranone 



1 :3:2':3',1 : 3 : 2' : 4'. and 1:3: 3'. 4' 

 Tetramethoxy ccmpounds. 

 Dumont u. Tambor. B., 43, (1969). 

 (D-11383) 



CYCLOID WITH EIGHT OXYGEN 



ATOMS. 



CYCLOID C,5H,oOaS 



Xanthene dicarboxylic sulphonic 

 acid 



CeH3(C02H)<'^^2>CeH3(C02H).S03H 



Epstein. J. pv., 81, (88). 



1912 CYCL01D.S WITH TWO 

 ATOMS OF OXYGEN IN THK 

 KING. 



GENERAL. 



Liebig. 77494. Tetramoleknlaritat 

 in der l'"luore>ceinreihe. 



Wanaoh. 81326. Fluoresoeinlo- 



8 11 II gen. 



Willgerodt 11. Maffezzoli. 81575. Aii- 

 tlirociii noil oiM hod icarbonssaiireanhvd rid. 



SPF.CLM.. 



CYCLOID C4H4O2 



('H:Cil 

 ^^CH : CH^^ 

 Widman. 81525. Konstitntion der 

 sogpnaiinten Halogendiphenacyle. 



CYCLOID CgHeOa 



Piperonaldehyde CH, -. 0, : CeHj.cHO 



p-BR01|(iriIENYL IIYDRAZO.NE 



Graziani. 75563. 



CYCLOID C,6H,04 



1 : 2-Biscoumarane indigo 

 Fries u. Pfaffendorf. I>., 43, (212). 



CYCLOID C16H10O4 



2, 1 -Dioxy- 1 ,2'-dicoumarone 

 Fries 11. Pfaffendorf. 15., 43, (212). 



CYCLOID CieHnOe 



Piperonyloin CHj : O2 : C^B^.ci\{U}{). 



CO.OeHj: 02:Cll2 

 carbamide .nnd tluocarhainide. 

 Torrey & Sumner. 80936. 



CYCLOID Ci8Hh04 



5,5'-Dimethyl-2,l dioxy- 1,2' di- 



coumarone 

 Fries u. Pfaffendorf. 15., 43, (212). 

 2X2 



