Cycloids containing oxygen. 



r36 



1912 



London, J. Cbem. Soc, 89, 1906, (1224- 

 1235) ; [abstract] London, Proc. Chem. 

 Soc, 22, 1900, (196). 



^CEt Cile^ 



Cf- >0 



^CH2.C( : CEy 



Bain, A. W. [Compound, isomeric 

 ■with dimethvlethylpjrone, obtained by] 

 the action of ethyl iodide ... on 

 the disodium derivative of diacetylace- 

 tone. I.e. 



CYCLOIDS C. Hi402 



Dimethylpropylpyrone 



X(C3H,).CMe^ 

 Cf >0 



\CH===CiIe/ 

 . W. I.e. 



^C(C3H,).CMe ^ 



ce >o 



Bain, A. W. [Compound, CioHj+Oj, 

 obtained by] the action of . . . 

 propyl iodide on the disodium derivative 

 of diacetylacetone. I.e. 



CYCLOID CnHieOz 



Dimethyldiethylpyrone 



(-.Q^CKt : Cile^Q 

 •"^^CEt : CMe^^ 



Bain, A. W. [. . . . and its 

 hydrochloride and platinichloride.] Z.c. 



CYCLOID CiHiOz 



Diphenylene dioxide 



C,H,<(j>CeH4 



Ullmann, Fr. und Stein, A. Berlin, 

 Ber. D. chem. Ges.,39, 1906, (622-625). 



CYCLOID C2rH,202 



Dinaphthylene dioxide 



Cir,H6<CQ^Cioa5 

 NeU, A. A. t.c. (1059-1060). 



CYCLOIDS WITH THREE OXYGEN 



ATOMS. 



CYCLOID C H: O3 



Methylpiperonylcarbinol 

 CHj<^>C6H3.CHMe.OH 



Mameli, E. Azione deH'jodomptilato 

 di iiiaLmesio sul piperonal. Gazz. chim. 

 ital., l!oina, 34, i, 1904, (358-374). 



CYCLOID CkHuOj 

 Ethylpiperonylcarbinol 

 CH2 : O2 : C6H3.CHEt.OH 



Benzoyl derivative. 



Mameli, E. Gazz. chim. ital., Eoma, 

 34, ii, 190L (409-4191 Hist, da Boma, 

 Rend. Ace. Liucei, (Ser. 5\ 13, 1904, 

 (315-323). 



CYCLOIDS WITH FOUR OXYOEN 

 ATOMS. 



CYCLOID C1.H12O4 



Bismetliylene-dioxystilbene 



( CH2<;^>C6H3.CH : 



Mancho^, W. und Zahn, Chr. Liebigs 

 Ann. Chem., Leipzig, 345, 1900.(333- 

 334j. 



CYCLOID Ci Hi,04 



Bismetliylenedioxy-dibenzyl 

 ( CH2<JJ>CeH3.CH2 )^ 



and the dibromide. 



Manchot, W. und Zalin, Chr. t.c. 

 (326-331). 



CYCLOIDS WITH FIVE OXYGEN 



ATOMS. 



CYCLOID CisHjsOs 



Methylpiperonyl oxide 



(ciI,<^>C6ll3.CHMe)20 



Majneli, E. Sull'etere metilpipero- 

 nilico. Gazz. chim. ital., Roma, 34, ii, 

 1904, (170-177 1. Rist. da Roma, Rend. 

 Ace. Lincei, (Ser. 5), 13, ii, 1904, (717- 

 722). 



CYCLOID C oH2205 



Ethylpiperonyl oxide 



(CH2<Jj*>C6H3.CHEt)20 



Mameli. E. Sull'etere etilpiperonilico. 

 t.c. (611-014). 



CYCLOID WITH EIGHT OXYGEN 



A TOMS. 



CYCLOID CmH.Os 



Ellagic acid 



CeH(OH)/ >CeH(OH), 



Perkin, A. G. [Constitution of 



■] 



London, J. Chem. Soc, 89, 1906, (251- 



