Ultrasound-assisted synthesis of 1,8-dioxo-octahydroxanthene derivatives catalyzed by p-dodecylbenzenesulfonic acid in aqueous media.
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.
Jin
Tong-Shou
TS
Department of Chemistry, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, PR China. orgsyn@mail.hbu.edu.cn
Zhang
Jian-She
JS
Wang
Ai-Qing
AQ
Li
Tong-Shuang
TS