2-(1-arylvinyl)benzaldehydes is reported. The reaction is promoted in the presence of an IrIII photocatalyst and an amine base at room temperature under the irradiation of blue LEDs, affording 10-methylanthracen-9(10H)-one derivatives in moderate to good yields with tolerance to various functional groups. A series of mechanistic experiments suggest that the reaction proceeds via energy transfer from the excited IrIII
报道了可见光诱导的2-(1-芳基
乙烯基)
苯甲醛的光催化分子内环化。该反应促进了由Ir的存在III光催化剂和在室温下的蓝色LED的照射下胺碱,得到10-methylanthracen-9(10 ħ)在中度至良好的产率-酮衍
生物与耐受各种官能团。一系列的机械实验表明,反应是通过能量从激发的Ir III光催化剂转移到底物上而产生的双自由基,然后进行1,5-氢转移,6π电环化和芳构化,从而生成环状产物。