Mixed Cycloids. 672 



3 : n-Dioxy 9 phenylxanthene 

 FIO.C,H3<[!^jp~>('6ll3<JlI 

 Pope & Howard. 79132. 



CYCLOIDS CnHuOs 



Toluhydroquinonebenzein- 

 Kolinnann. A., 372, (342). 



^' Oxy-4'-methoxy-9-phenyl-2-methyl- 



xanthene ■•md its (tcclijl dci-ivative. 



Pope & Howard. 7913;i 



CYCLOID CisH.eOj 



Mflhi/1 rlhcr 



8-Oxy-l 1-/' Methoxyphenyl-^- 

 Naphthaxanthene niul its acetyl 



derivative. 



Pope ct Howard. 7!) 133. 

 CYCLOID C,4H, Oj 



o'-Benzyl-/33-diphenylpyronone 



p^ .(Th :C(C,11,)^ 



•"^^CIIPli CO. O ^ 

 Wedekind. .\., 378, (27r)). 



CYCLOID CjvHmOs 



;3/3'-Dibenzyl a'-phenylethyl- 

 pyronone 



() . CO . C.(\H, 

 Wedekind. A., 378, (283). 



CYCLOIDS WITH FOUR OXYGEN 



ATOMS. 



CYCLOID C6H„04 



a-Acetyltetronic acid 



/CO .CH.COMe 

 0< I 



Phenylhydrazone, hydrazone, oxime, 



seinicarhnzone and hetazine. 

 Benary. V,., 43, (IOCS). 



CYCLOID CsHeO* 



Dehydracetic acid 



— CO.CH.CO.CH3 



CMe:CH.CO 

 Conversion into xylenol 

 CeHjMej.OHfS : 3 : 1] 

 Carllnfanti e Qermain. Roma, Rend. 

 Ace. Lincei. (ser. 5), 19, ii, 1910, (234- 

 239). 



1911 



CYCLOID CnHK,04 



Dimethylphthalide carboxylic acid. 



[1 : [J C02H.Cen3<^-^!^>O 

 Bargellini. C, 40, ii, (27, 74). 

 CYCLOID C,3H„04 



2 : 2'-Dioxyxantlione 

 CJl3(OH)<^?Q>CeH3(OH) 



Also the 3 : 3'-is(imkimde and its 

 dimethyl ether. 



Baeyer. A., 372, (131). 



CYCLOID C,sH,o04 



2 : 3-Dioxyflavone. 

 ReigTodBkiu.Tambor. H, 43, (1904) 



CYCLOIDS C,f,H, O4 



Trioxy-2-styrylcoumarone 



5:3': 4'-'ritiMETiiYi. comi'ounh. 

 Abelin u. Kostanecki. B., 43, ( 2 1 57). 



4-Methyl i-anisoyl 2 oxycoumarone 



C.H,Me<^^"^'>C.CO.CeH, O.Me) 

 Auwers. 15., 43, (2192). 



CYCLOID C,,HmO« 



2 : 2' Dioxyplieiiylxanthanol 



HO.CeH3<^^:^~>CeH3.0H 



Also the 3 : '-isomeride. 



Baeyer. A., 372, (132). 



3 : (;.Dioxy-4'-methoxy-9-phenyl- 

 xanthene 



HO.CeH3<--^^;;^;^j^>CeH3.0H 

 Pope & Howard. 79133 



CYCLOIDS C2cHm04 



2 : 4.Dioxydiphenylphthalide 



(H0),C6H3.CPh<^^«[!^> 



also the 3 : 4 and 2 : o-isomerides 

 Baeyer. A., 372, (93). 



2-Piperonylnaphthaflavanone 



0— CH.C6H3 : OjCH, 

 6'-Nitrodeiivative 

 Torrey & Cardarelli. Am. Soc , 32, 



(1477). 



