Synthesis of 3,3,6,6-tetramethyl-9-aryl-1,8-dioxo-1,2,3,4,5,6,7,8-octahydroxanthene from aro- matic aldehyde and 5,5-dimethyl-1,3-cyclohexadione using NH2SO3H and SDS as the catalyst (10 mol%) in water was described.

• 以氨基磺酸和十二烷醇硫酸钠(SDS)为复合催化剂；芳醛和5；5-二甲基-1；3-环己二酮为原料；于水中合成了3；3；6；6-四甲基-9-芳基-1；8-二氧代-1；2；3；4；5；6；7；8-八氢化氧杂蒽.