title: Ultrasound-assisted synthesis of 1,8-dioxo-octahydroxanthene derivatives catalyzed by p-dodecylbenzenesulfonic acid in aqueous media.
abstract: An efficient and convenient approach to the synthesis of 3,3,6,6-tetramethyl-9-aryl-1,8-dioxo-octahydroxanthene derivatives using p-dodecylbenzenesulfonic acid (DBSA) as the catalyst (10 mol.%) under ultrasound irradiation is described. This method provides several advantages such as environment friendliness, high yields and simple work-up procedure. In addition, water was chosen as a green solvent.
authors.affiliation: Department of Chemistry, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, PR China. orgsyn@mail.hbu.edu.cn
authors.forename: Tong-Shou
authors.initials: TS
authors.lastname: Jin
authors.forename: Jian-She
authors.initials: JS
authors.lastname: Zhang
authors.forename: Ai-Qing
authors.initials: AQ
authors.lastname: Wang
authors.forename: Tong-Shuang
authors.initials: TS
authors.lastname: Li