2-硫代水杨醛 、
1-(3,5-二甲基苯基)-吡咯-2,5-二酮 在
Takemoto's catalyst 作用下,
以
xylene 为溶剂,
反应 7.0h,
生成 2-(3,5-dimethyl-phenyl)-9-hydroxy-9,9a-dihydro-3aH-4-thia-2-aza-cyclopenta[b]naphthalene-1,3-dione 、 2-(3,5-dimethyl-phenyl)-9-hydroxy-9,9a-dihydro-3aH-4-thia-2-aza-cyclopenta[b]naphthalene-1,3-dione 、
2-(3,5-dimethyl-phenyl)-9-hydroxy-9,9a-dihydro-3aH-4-thia-2-aza-cyclopenta[b]naphthalene-1,3-dione