2-硫代水杨醛 、
N-(4-溴苯基)马来酰亚胺 在
Takemoto's catalyst 作用下,
以
xylene 为溶剂,
反应 7.0h,
生成 2-(4-bromo-phenyl)-9-hydroxy-9,9a-dihydro-3aH-4-thia-2-aza-cyclopenta[b]naphthalene-1,3-dione 、 2-(4-bromo-phenyl)-9-hydroxy-9,9a-dihydro-3aH-4-thia-2-aza-cyclopenta[b]naphthalene-1,3-dione 、
2-(4-bromo-phenyl)-9-hydroxy-9,9a-dihydro-3aH-4-thia-2-aza-cyclopenta[b]naphthalene-1,3-dione