1910 



(14 



1920 



Anhydrotrimethylbrazilone and its acetyl 

 derivative ; also its oxidation. Deoxy- 

 ti'imethylbraziloue. Nitrohydroxydiliy- 

 drotrimethylbrazilone and its acetyl deri- 

 vative ; also tlie action of potash, phenyl- 

 hydrazine and 2>-hromo2ilienylhydrazine 

 on it, and its oxidation.] London, J. 

 Chem. Soc, 81, 1902, (1016-1022, 1040- 

 1056). 



[Product of oxidation of the trimethyl 

 ether of brasilin.j 

 Eostanecki, St[anislaus] v. imd Lampe, 

 V. Studien iiher das Brasilin. Berlin, 

 Ber. D. chem. Ges., 35, 1902, (1667- 

 1674). 



CYCLOIDS CONTAINING SEVEN 

 OXYGEN ATOMS. 



CYCLOID C7H4O7 



Meconic acid 



Q X!(C02H) : CH -^riQ /^n. 



Tickle, T. and Collie, J. Nomian. 

 [Oxidation of meconic acid with hydrogen 

 peroxide ; formation of hydroxycomenic 

 acid.] London, J. Chem. Soc, 81, 1902, 

 (1004-1007; [abstract] London, Proc. 

 Chem. Soc, 18, 1902, (170-171). 



CYCLOID C20H20O7 



Haematoxylin 



Tetramethyl etlier 



CeH/° 9\^>OaH3(OMe), 



II ^CH(OH).C/ . (OH) 



rOMe)2 



Perkin, W. H. jim. [Tetramethylhae- 

 matoxylone. Anhydrotetranietliylhae- 

 matoxylone, its acetyl derivative and 

 potassium compound. Nitrohydroxydi- 

 hydrotetramethylhaematoxylone and the 

 action of potash and phenylhydrazine on 

 it.] London, J. Chem. Soc, 81, 1902, 

 (1057-1066). 



C6H2(OH)2 



CYCLOID CJ0H24O7 



Dichrysarobin. 



<CH ->^6^3Me C3H2(OH)2<gg^H)> 



I -0 1 II 



CeHjMe 



Jowett, II. A. I), and Potter, Charles 



Etty. [Dichiysarobin and its hexa- 



acetyl derivative ; also its oxidatian and 

 reduction. Dichrysarobin methyl ether 

 and its pentacetvl compound.] London, 

 J. Chem. Soc," 81, 1902, (1580-1583) 

 [Fidl paper] ; Proc. Chem. Soc, 18, 

 1902, (192). [Abstract]. [6500 1230 

 1530]. 



1920 CYCLOIDS CONTAINING 

 SULPHUR 



Autenrieth, W[ilhelm] und Hennings, 

 R. Ueber schwefelhaltige cyclische 

 Verbindungen. (2. Mitt.) Berlin, Ber. 

 D. Chem. Ges., 35, 1902, (1388-1400). 



Biehringer, Joachim und TopaJoff, 

 Wassil. Ueber Thiopyronin. J. prakt, 

 Chem., Leipzig, (N.F.), 65, 1902, (499- 

 511). 



Boes, J. Ueber das Tiiionaphthen 

 des Braunkohlenteers. ApothZtg, Ber- 

 lin, 17, 1902, (565). 



Busch, M[ax] und Lingenbrink, E. 

 Ueber die Grenzen der Bildung cykli- 

 scher Dithiokohlensaureester. J. prakt. 

 Chem., Leipzig, (N.F.), 65, 1902, (473- 

 479). 



Edinger, All)ert und Ekeley, John B. 

 Ueber ilie basischen Eigenschaften des 

 Schwefels. (Vorl. Mitt.; Berlin, Ber. 

 D. chem. Ges., 35, 1902, (96-98). 



Hennings, Richard. Ueber schwefel- 

 haltige cyclische Verbindungen. Diss. 

 Freiburg i. B. (Druck v. 0. A. Wagner), 

 1902, (59). 22 cm. 



Kreis, Hans. Ueber eine neue Far- 

 benreaction des Thiophens. ChemZtg, 

 Cothen, 26, 1902, (523). 



Thyssen, Hehnich. Das Hydrazid 

 der o-Thiophencarbousaure. (C u r t i u s, 

 Theodor. llydrazide mid Azide organi- 

 scher Sauren. XXV.) J. prakt. Chem., 

 Leipzig, (N.F.), 65, 1902, (1-19). 



CYCLOIDS CONTAINING ONE 



SULPHUR ATOM. 



CYCLOID CsHgONzS 



a-Thiophene carboxylic acid 

 hydrazide. 



C4H3S . CONH . NH2 



AND ITS HYDROCHLORIDE. 



Thyssen, Ilcinrich. J. prakt. Chem. 

 Leipzig, (N.F.), 65, 1902, (1-19). 



