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
作者:Freek van de Griendt、Hans Cerfontain
DOI:10.1039/p29800000904
日期:——
The reaction of some α-chloro-substituted 9-methyl-, 9-ethyl-, 9-isopropyl-anthracenes and of 1,4,9-trimethyl-anthracene (3a–j), with dioxan–SO3 in dioxan has been studied at 25 °C. All the methylanthracene derivatives (3a–d) yield α-sulphonic acids (4a–d). 1,5-Dichloro-9-methyl- and 1,4,9-trimethyl-anthracene yield, in addition, the dimer (5c) and the sultones (6l and m) respectively.