Acids. 



1330 



i;i-:.\zi':xi>ii) acids C.,H:„-,806 



ACID CsHnOe 



Dioxyphenylbenzoylglycollic acid 



/•-'////// estev oj the monometlnjl derivative 

 iIIOYMeOl.CJIj.CfOfDBz.CO^Et 

 Guyot .-I Gry. V.W., 149, (929). 



iu:\'Zi-X(>ii> Acms C.,H2..-2o06 



ACID CsHieOe 



Dioxydiphenacylacetic acid. 



hiiitetinjl elher 

 iMc().( VII, .('().CH2).,CH. 00,11 

 Boug-ault. C.i;.. 148, .'1272). 



l'.EXZKX(tll) ACIDS CHsu-z'iOe 

 ACID CisHiOe 



Acid CJLp.iORk.CU^R 

 Robinson & Simonsen. 7037.3. [Ehein, 

 imtlivl and ethyl esters and diacetyl- 

 rliein etlivl ester. Also dimethylrhein 

 C',4H502(6Me;2.C02H and its chloride, 

 amide and ethyl ester.] 



J'.CXZEXfiTD ACIDS WITII SEVEN 



()XY':EX atoms. 



r.EXZEXdU) ACIDS CHju-mOj 



ACIDS CiHeO; 



Tetraoxyphenylglyoxylic acid 



Mrlh,jleue dlwethyl ether 

 r-':3:4:o:l] 

 C'eH!OMeJ,( : 0^ : CMs^.CO.COjII 

 Delepine. HI., 5, ^9l'8). 



Trioxyplithalic acid 



(HO)3C6H(C02H)2 [-5 : i : 3 : 2 : 1] 



Methy;. metiiy[.ene ether 



CHjOj : C6H(OMe)(C02H)2 [5:4:3:2:1] 



Cotarnic add. Synthesis. 



Perkin. Robinson n. Thomas. 697.50. 



ACID C.H 0; 



Dioxyphenyltartronic acid 



Utiiiethijl ester of the methyl eilirr 



[4:3:1] 

 (HO)(MeO).C6K3.C(OHXCO.,MeJ2 

 and the corresponding diethijl esler. 

 Guyot et Gry. C.R., 149, (928). 

 (d-9973) 



BEXZEXOJD ACIDS CnH.n-i.O; 

 ACID CHeO; 



Oxytrimesic acid 



also .\]ETii()XYTiiiMt:.sic ACID and its 



tr'nnethyl ester. 



Ullmann u. Brittner. B., 42, (2543). 



ACID CuH.nO, 



a/>Dioxyphenacylmalonic acid 



H().C6H4.Co.cn2.C(OII)(C02Hi2 



Ukeide 

 I I0.06H4.CO.CH2.C(OH)(C02HJ 



NH2.CO.NH.CO 

 p-Oxyplienacyltartronuric acid. 



Methyl and ethyl ethers. 



Kuhling u. Schneider. V>., 42, (1291). 



BEXZEXOID ACIDS WITH EIGHT 



OXYGEN ATOMS. 



BENZENOID ACIDS CnHzM-nOa 



ACID CnHsOa 



Cresotin-glyoxyl-dicarboxylic acid 



CeH-MeiCU.lljjfOHXOO.C'U^Hj 

 Dimroth, 0. F.., 42, (1624). 



ACID C14HUO3 



Benzyldicarboxyglutaric acid 



rhCH,.CIlLrll(('()2Hj2 2 

 DixrnuLE PhCH2.CE][CH{CN).C02H]j 

 Hawortli. 67044. [aa'-Dicyano-j3- 

 henzylgkitaric acid.] 



BENZENOID ACIDS CnH.n-iiOa 

 ACID CHi.Oi 



Tetraoxybenzoin carboxylic acid 



(.HOi.Cells.CU.CIlrUli,. 



C6H2(OH)2.C02tl 



Trimetliyl ether 

 [4:2: 1] (MeO)(HO;CeH3.CO.(;H(OH). 

 CsH2(OMe)2.C02H [1' : 4' : 5' : 2'] 

 Perkin & Robinson. 69749. 



BENZENOID ACIDS C.,H2u-2208 

 ACID CuH„0> 



EUagic acid 



[•';]'• O 



Synthesis. 

 Bronneck. il., 29, (277). Sisley. 

 lU., 5. (727j. 



2 S 



