2. Aromatic sulphonation. Part 78. Behaviour of some α-chloro-substituted 9-methyl-, 9-ethyl-, 9-isopropyl-anthracenes, and of 1,4,9-trimethylanthracene in dioxan–sulphur trioxide complex in dioxan as sulphonating medium Freek van de Griendt,Hans Cerfontain J. Chem. Soc. Perkin Trans. 2 1980 904
3. The observation of a thermal ‘double aromatization’ process in a hydrocarbon with fused blocked aromatic rings Bernard Miller,Jamil Baghdadchi J. Chem. Soc. Chem. Commun. 1986 1257
4. Intramolecular exciplex formation in some compounds containing condensed aromatic hydrocarbon and NN-dimethylaniline moieties Riichiro Ide,Yoshiteru Sakata,Soichi Misumi,Tadashi Okada,Noboru Mataga J. Chem. Soc. Chem. Commun. 1972 1009
5. Aromatic sulphonation. Part 72. Behaviour of some 9-alkylanthracenes containing 2 α-hydrogens and 0–3 β-hydrogens in the side-chain with dioxan–sulphur trioxide in dioxan as sulphonating medium; mechanism for alkyl side-chain reduction and subsequent sulphonation Freek van de Griendt,Hans Cerfontain J. Chem. Soc. Perkin Trans. 2 1980 13