1910 



(38 



191© 



CYCLOID CuHeO, 



3,4-Dioxycliromone carboxylic acid 



Dimethyl ether 

 C,H,(OMe),<0^- 5:^C0,H 



David, E. und Kostanecki, S. von. 

 Berlin, Ber. D. chem. Ges., 36, 1903, 

 (125-129). 



CYCLOID CibHioOs 



Dioxybenzylidenecoumarone 



DlMETIlOXY DElilVATlVE 



(OMe)2C6H2<[^Q>C : CH . C6H3(0HJ2 



Perkia, A. and WHson, C. R. [Di- 

 niethoxydihydroxybenzylideneconmara- 

 none and its potassium derivative.] 

 London, J. Chem. Soc, 83, 1903, (137- 

 138); [alDstract] Proc. Chem. Soc, 18, 

 1902, (215). 



CYCLOID Ci-H,Oo 



Dioxybenzbisaronyl 

 Dimethyl peeivative 



\ o () — / 



CYCLOID CHuOo 



/3-Triinethylbrazilone 



oxiME CigHjgOj : NOH 

 and its acetyl derivative 



Also BROMOTRIMETnYLBRAZIlONE 



CjgHijBrOg and 



BltOMOACETVLTIilMETlIVI.DEHYDROBnA'/ILIN: 



CziH^BrOe 

 Herzig, J[osefJ und PoUak, J. Berlii 

 Ber. D. chem. Ges., 36, 1903, (398-400 



OXIJIE of the DIXITRO DERIVATIVE. 



Herzig, J. und PoUak, J. Berlin, Ber. 

 1». chem. Ges., 36, 1903, (2319-2322). 



Perkin, W. H., jiin. Trimethylbra- 

 zilone. London, Proc. Chem. Soc, 18, 

 1902, (147-14SJ. 



CYCLOIDS CONTAINING SEVEN 

 OXYGEN ATOMS. 



CYCLOID C7H4O7 



Me conic acid 



Peratoner, Alberto. SiiUa trasforma- 

 zione di derivati deH'acido meconico in 

 ossipiridine. Roma, Rend. Ace. Lincei. 

 (See. 5;. 11, 1" Sem., 1902, (327-333^ 



ilcO.CeH3^^-9~9-^ VeH,.OMe 

 \-C0 CO-/ 



Ruhemann, S. [Dimethoxybisbenza- 

 ronvl and its reduction.] London, J. 

 Chem. Soc, 83, 1903, (1130-1133); 

 [abstract] Proc. Chem. Soc, 19, 1903, 

 (201-202). 



CYCLOID CieHuOi 



Dioxybisketocoumaran 



Dimethyl derivative 

 MeO.CeH3<;CO.CH.CHX^\^^jj^^^^ 



RiLhemami, S. [Dimethoxybisketo- 

 coumaran.] London, J. Chem. Soc, 83, 

 1903, (1130-1133); [abstract] Proc. 

 Chem. Soc, 19, 1903, (201-202;. 



CYCLOIDS Cz.HivO: 



Dioxyfluoresceiu 



The rucHLORO, dibromo, dichloro-dibroji' 

 tetra-chloro-dibro.mo and tetrabromo 



derivatives and their ethers. 



Tetrachloeo derivative C2oHg07Cl4 



and its telraeetate, di- and tetramcthi, 



ethers 



Osorovitz, N. Berlin, Ber. D. chen; 



Ges., 36, 1903, (1076-1084). 



Pliloroglucin olphthaleiii 



and its tetrabenzoate. tetracetate and 



tetrabromo derivative. Also the di- 



and tetramethyl esters. 



Liebermann, C. und Zemer, Tl, 

 Berlin, Ber. D. chem. Ges., 36, 190:: 

 (1070-1070,1. 



