1330 



ACID CnH2n-2208 



EUagic acid CuHeOg 



Engelbrecht, Ad. Gallogen, ein 

 neues Darmadstringens. Pharm. Ztg, 

 Berlin, 47, 1902, (580). 



ACID CnH2n-3208 



ACID C23HUO8 



Dibenzoyltrimesic acid 



CeHBz,(C02H)3 



Mills, William Hobson and Easter- 

 field, Thomas Hill. [Dibenzoyltrimesic 

 acid and its salts.] London, J. Chem. 

 See, 81, 1902, (1322-1323); [abstract] 

 London, Proc. Chem. Soc, 18, 1902, 

 (167-169). 



SULPEONIC ACID WITH TEN 

 OXYGEN ATOMS. 



p-T0LYL-?7l-.'UaiN0PHEN0I, TRISULPHONIC AOID 

 Ci3H,30,oNS3 



Gnehm, R. und Veillon, L. J. prakt. 

 Chem., Leipzig, (N.F.), 65, 1902, (49- 

 81). 



5G8 1330 



SULPHONES C11H16O4S2 



Benzylidene diethyl disulphone 



CeHs . CH(S02 . C^Hs)^ 

 0-, m- and ^j-Nitrobenzylidene diethyl 



DISULPHONE 



CiiHjsOeS^N i.e. 

 NO2 . CeH^ . CH(S02 . CaHs)^ 



Posner, Theodor. Zur Kenntniss der 

 DisoKone XL Ueber den Einfluss von 

 Kernsubstituenten auf die Reactions- 

 fahigkeit aromatischer Aldehyde und 

 Ketone. Berlin, Ber. I), chem. Ges., 

 35, 1902, (2343-2354). 



BENZENOID ACIDS WITH 

 OXYGEN ATOMS. 



TEN 



ACIDS CnHzn-ieOio 



ACID CuHeOio 



Benzene pentacarboxylic acid 



CeIl(C02H)5 



Wolfif, Ludvvig. Liebigs Ann. Chem., 

 Leipzig, 322, 1902, (351-391). 



SULPHONE C12H18O4S2 



Phenylethylidene diethyl 

 disulphone 



CgHg . CMe(S02Et)2 



m- and 2>Nitro-phenylethtlidene 



DIETHYL disulphone 



C12H17O6NS2 i.e. 

 NO2 . C6H4 . CMe(S02 . CzHs)^ 



Posner, Theodor. Berlin, Ber. D. 

 chem. Ges., 35, 1902, (2343-2354). 



m-AuiNOPUENYLETHYLIDENE DIETHYL 

 DISULPHONE 



Ci2Hi904NS2 i.e. 

 NHj . C6H4 . CMe(S02 . C2H5)2 



Posner, Theodor. Berlin, Ber. D. 

 chem. Ges., 35, 1902, (2343-2354). 



SULPHONES. 



DISULPHONES. 



SULPHONE C8H10O4S2 



Phenylene dimethyl disulphone 



C6H4(S02Me)2 



m-PHENYLENE DI-IODOMETHYL DISUI-PHONE 



C'sH 8^412^2 



Autenrieth, W. und Hennings, R. 



Berlin. Ber. I), chem. C!es., 35, 1902, 

 (1388-1100). 



SULPHONES C17H20O4S, 



Diphenylmethylene diethyl 

 disulphone 



CPh2(S02Et)2 



III- and p-NlTRO-DIPUENYLMETHYLENE 

 DIETHYL DISULPHONE 



CnHigOgNSj i.e. 

 NO2 . CeH, . CPh(S02C2H5)2 



Posner, Theodor. Berlin, Ber. D. 

 chem. Ges., 35, 1902, (2343-2354). 



