Acids. 



617 



1330 



Phenol o-sulphonic acid- 

 Bauer. 04] 111'. l-Methoxy-l-amido- 

 be 1 1 z ol- 2-suIf osiiure 



MeO.C6H3(NH2).S03H 



OXAL-O-ANISIDIDE DISULPHONIO ACID 



[.CO.NH.C6H3(OMe).S03H]22NH3 

 Bauer. B., 42, (I'llo). 



Phenol p-sulphonic acid. 



Molineus. 69211. Eimvirkuno- von 

 Phosphorpeiitacblorid auf Phenolpara- 

 sulfosaure, Dibromplienolparasulfosauie 

 unJ Acetylphenolparasulfosaure. Diss. 



OXAL-p-ANISIDIDE DI-0-SULPIIONIC ACID 



[CO.HN.C6H3(OMe).S03H]2 

 Bauer. R. B., 42, (2113). 



BPJNZENOID ACIDS WITH FOUR 



OXYGEN ATOMS. 



BENZENOID ACIDS CMH2n_304 



ACIDS C7H6O4 



2 : 3-Dioxybenzoic acid 



(HO)2C6H3.C02H [3:2:1] 



Dimethyl e.ster of the dixitro- 



derivativk. 



Wegscheider, MuUer u. Chiari. 



72198. Nitrierung dei- Opiansaureester 



und Abkommlinge der Nitroopiansiinre. 



2 : 4.-Dioxybenzoic acid 



(HO)2C6n3.C02H [4:2:1] 



P-Resorcylic acid. 



Carbmethoxy-j3-resorcylic acid. 



Also dicarbmethoxy-;8-resorcylic acid. 



Fischer. B., 42, (221). 



2 : 5-Dioxybenzoic acid 



[5:2:]](HOJ2CV,H3.C02H 



Gentlsic acid. 



Carbmethoxygentisic acid 



C02Me.O.C6H3rOH)C()2H 



Also dicarbmethoxygentisio acid. 



Rscher. B., 42, (222). 



Protocatechuic acid 



C6H3(OHJ2.C02H [4:3:1] 



Eametaka. 67708. Einige Derivate 

 der Protocatechusanre. 



Nitrile C6H3(OHi2.C]Sr 

 Ewlns. 05877. 



3, 4-DioxYHii'PURic acid 

 (OffijCeHj.CO.NH.CHj.COjH 

 Kametaka. B., 42, (1482). 



PROTOCATECHDYL-p-OXYBENZOIC ACID 



(OH)2C6H3.CO.O.C6H4.C02H 

 Kametaka. B., 42, (1484). 



3 : 4-Carbonyldioxybenzoic acid 

 CO : O2 : C6H3.CO2H 

 Nitrile CO : 0^ : CgHs.CM 

 Ewlns. 05877. 



Methylene ether CHj : O2 : CgHj.COaH 

 Piperonylic acid. 

 Oertly u. Pictet. 09409. Derivate 

 der Piperonylsiiure. 



3 : 4-Dichloromethylenedioxybenzoic 

 acid CClj : O2 : CeHj.COjH 

 Nitrile CCI2 : O2 : CbHj.CN 

 Ewlns. 65877. 



ACIDS C3H3O4 



Homoprotocatechuic acid 



[3:4:l](HO)2C6H3.CH2.C02H 

 Synthesis. 

 Pictet u. Gams. B., 42, (2949). 



Metmjl ether 

 [3:4: 1] MeO.C6H3(OH).CH2.C02H 



Homovanillie acid. Synthesis. 

 Mauthner. A., 370, (372). 



Methylene ether 

 CH2O2 : C6H3.CH2.CO2H 

 Homopiperonylie acid. Synthesis. 

 Mauthner. A., 370, (375). 



3 : 4-CARBONYLDIOXYPHENyLCHLOROACETIC 



acid CO : O2 : C6H3.CHCI.CO2H 

 and its chloride and ethyl ester. 

 Barger & Ewins. 64095. 



3:4-CARBONYLDIOXyPHEXYLDICHLOROACETIC 



ACID CO : O2 : C6H3.CCI2.CO2H 

 and its chloride. 

 Barger & Ewins. 64095. 



3 : 4-dlchloromethylenedioxyphexyl- 



chloroacetic acid 



CCI2 : O2 : C6H3.CHCI.CO2H 



chloride and ethyl ester. 



Barger & Ewins. 64095. 



