Cycloids containing oxygen. 



CYCLOIDR WITH SIX OXYGEN 



ATOMS. 



CYCLOID CigHuOe 



Trimethoxy-a-brazanquinone. 

 Perkin & Robinson. 097 49. 



CYCLOID C, HifO.i 



Diphenyltetrahydropyrone 

 dicarboxylic acid. 



Dir.RdMO DFRIVATIVE 

 CO2H.CBr.CU.CBr.CO2H 



CHPh.O. CHPh 

 Ethyl ester. 

 Stvan. Z., 41, (477). 



CYCLOID CzoHisOb 



a-Anhydrotetramethylhaematoxy- 

 lone- NrriiOACETVL derivative. 

 Perkin c'i Robinson. (19749. 



CYCLOIDS WITH SEVEX OXYGEN 



ATOMS. 



CYCLOID CsHeO, 



Methoxycoumalin dicarboxylic 

 acid- Methyl ester 

 .CCCOjMej : CH 



MeOC 



\r 



CO . C.CO,Me 



Guthzeit, Weiss u. Sbaefer. J. pr., 



80, (447j. 



CYCLOID CisHioO? 



Tetraoxybenzoin carboxylic acid 

 lactone. 



OXYTRIMETIIUXY aiicl TETRAMETHOXY 

 liENZOIN rARBOXYLIG ACID LACTONE. 



Perkin & Robinson. 69749. 

 CYCLOID CzoHieO? 



Tetramethoxy a-braganquinone. 

 Perkin & Robinson. 119749. 



CYCLOID C. HooOs 



Diacetoxytrimetlioxy-a-brazan. 

 Perkin & Robinson. 09749. 



1912 CYCLOIDS WITH TWO 

 ATOMS OF OXYGEN IN THE 

 RING. 



GENERAL. 



Barger. 64092. Konstitutioii des 

 j.Diclilor-piperoiials". 



)5 1912 



Be'champ. 64195. Quelques derives 

 du tliioiiidioo. 



Finck. 65992. Homologe des 2- 

 Cumaranons mid indigoide \>rbindiin- 

 gen aus denselben [Cumaraniudigoderi- 

 vate]. Diss. 1908. 



Fries u. Pfaffendorf. 66289. Kon- 

 densationsiDrodukt des Cuinaranons und 

 seine Umwandlung in Oxindirubin. 



Heller. 67088. Asymnietrisches Di- 

 bronifluorescein. 



Kropp u. Decker. 68125. Konstitu- 

 tioii der Fluorescine und Hydrocliinon- 

 phtlialeiii-Farbstoffe. 



Nierenstein. 69417. Sog. ,,Bliime" 

 der Pyrogallolgerbstoffe und ihre 

 Identitiit niit der Ellagsaure. 



Oertly u. Pictet. 69409. Derivate 

 der rii^eronylsaare. 



Pauly. 69070. Konstitution des 

 ,,Diclilor-piperouals". 



u. Alexander. 09073. 



,,Diclilor-pi23eronal". 



Trunkel. 71790. Eiu einfaches Ver- 

 faliren zur Gewinnuug grosserer Men- 

 gen Ellagsaure. 



Widman. 72314. Konstitution der 

 sogenannten Halogeudiphenacyle. 



" SPECIAL. 

 CYCLOID CfcHsOz 



3 : 4-Methylene-dioxytoluene- 



aJ-( 'lILolici-DINllHd DERIVATIVE 



CILO, :C6H,.CC1;X02J2 



Ponzio e Charrier. C, 38, i, (048). 



CYCLOID C7H6O3 



l-Oxy-2 : 3-metliylenedioxybenzene, 



5-xiTR(.)-DERiVATivE and the 1-methoxy 



COMPOUND. 



70637. 

 CYCLOID CsHeOs 



Piperonal 



W-NlTRllPirERONALl'lIENYLHVDRAZONE 



CH2 : O2 : C6H3.C(N02) : NjHPh 

 Ciusa u. Pestalozza. Roma, Rend, 

 ace. Lincei, (ser. d), 17, 1908, 1 sem., 

 (840-846). 



CYCLOID C9H3O3 



3-0xy-4 : 5-methylenedioxystyrene. 



3-Meiiioxy C(X\ii'orND and its 



W-2( )-DINITRO-DERIVATIVE. 



Salway. 70038. 



