Cycloids containing oxygen. 



CYCLOID C:4Hi:0. 



Dinaphthapyiylmalonic acid 

 Etuyl ester 



0<9,"S''>CH.CHrC02Et)2 



and SEMINITRILE 



OLCioHsJjCH.CHCy.COzEt 



Fosse, R. et Robyn, A. Paris, C.-R. 

 Acad, sci., 143, 1906, (239-L'i2). 



CYCLOID CjHisOa 



Dinaplithapyrylsuccinic acid 



0<p'°U«>CH.CH(C02H}.CH2CO.H 



Fosse. R. t.c. (09-61). 



CYCLOIDS CONTAINING SIX 

 OXYGEN ATOMS. 



CYCLOID C;H406 



Chelidonic acid 



Dibromo and dicJdoro derivatives of the 



ETHYL ESTER aud ESTER ACID. 



Feist, Fr. Berlin, Ber. D. client . Ges., 

 39, 1906, (36.J9-3661J. 



CYCLOID C3H10O3 



Hexanolide dicarboxylic acid 

 CiIe2<j3^^^^!y^'>CH.C02ll 



Diethyl ester. 



Haller, A. et Blanc, G. Paris, C.-R. 

 Acad, sci., 142, 1906, (U71-1-174). 



CYCLOID C.HbOs 



Dimetliylpyrone dicarboxylic acid 



O.CMe 

 CO2H.CAC : C.C.CO2H 



Palazzo, V. C. Azione dell'idrossilam- 

 inina suH'etere dimetilpirondicarbonico. 

 Gazz. chini. ital., Roma, 34, i, 1904, 

 (458-482j. 



CYCLOID C Hi.O 



Tetraoxydiphenylplithalide 



Tei u.\m ethyl deu 1 vati ve 



<-<J<_.U->'-<C",n3(OMeJ2 



Perkin, W. II. jun. and Weizmann, C. 

 London, J. Clieiu. See , 89, J 906, (1649- 

 1005). ■ 



734 



1911 



CYCLOIDS CisHuOj 



2,2',4'-Trioxyflavonole 



also trimethoxyflavoxole. 



Bonifazi, E., Kostanecki, St. von und 

 Tambor, J. Berlin, Ber. D. chem. Ges., 

 39, 1906, (86-91). 



3,2',4'-Trioxyflavonole 



and the trimethosyfi.avonole. 



Kostanecki, St. von, Lampe, V. und 

 Triiazi, .S. t.c. (92-96). 



CYCLOID CibHisOs 



l,3,2',4'-Tetraoxyflavanone 



The tetramethyl coMrouxD and its 

 a-isonitroso deri vati ve . 



Kostanecki, St. Yon, Lampe, Y. und 

 Tambor, J. t.c. (625-628). 



CYCLOID CisHmOs 



Gate chin 



PeXTAMETHYL ETHEU C20H24O6 



and the tetra and PEXTAiiETHYL ethers 



of SIOSOIiROMOCATECIIlX. 



Kostanecki, St. von und Lampe, V. 

 t.c. (4007-40141 



CYCLOID CiHiiOi 



2-(2,3,4-Trioxyi3henyl -4-anhydro- 

 methyl-7,S-dioxy-l,4-benzopyranole 



[GaUaceteiii i 



,0 C.C6H2(OH)3 



X( : CHjl.CH 

 also the tri.metuoxyphexyl derivative 

 and its salts. 



Biilow, V. und Schmid, C. t.c. (850- 



857J. 



CYCLOID CiaHnOfi 



2-Methyl-"'-phtlialylaldeliydic acid 

 4- anliy drometliyl-7 , s-dioxy- 1 ,4- 



benzopyi'anole. 

 Biilow, ('. und Deseniss, il. t.c. 

 (3664-3667). 



CYCLOID CONTAINING SEVEN 



OXYGEN ATOMS. 



CYCLOID Ci.Hi.O; 



Catechone 



Tri- and tetramethyl ethers 



also ii'(ln)catec}io)ie trlmetliijl ether. 



Kostanecki, St. von und Lampe, V. 

 t.c: (4007-4014). 



CaH2(OH)2<^ 



