BENZENE its Aromaticity M ARULSELVAN Syllabus Benzene and
Electrophilic substitution ring sulfonation of arenes benzene methylbenzene properties uses of alkylbenzenesulfonic acids benzenesulfonic acid methylbenzene sulfonic acid advanced A level organic chemistry revision notes doc brown
Aromatic sulfonation - Wikipedia
Aromatic sulfonation with sulfur trioxide: mechanism and kinetic model - Chemical Science (RSC Publishing) DOI:10.1039/C6SC03500K