Cycloadducts obtained via [2+2] photocycloaddition between an unsaturated oxoacid and cycloalkene are readily opened by irradiation at 366nm, in the presence of catalytic amounts of acridine in toluene and under an oxygen atmosphere, leading after treatment with dimethylsulfide to the formation of polycyclic diketones or ketolactones.
通过不饱和含氧酸和环烯之间的[2 + 2]光环加成反应得到的负载物很容易通过在366 nm的辐射下,在催化量的cr啶在
甲苯中和
氧气气氛下打开而打开,用
二甲基硫醚处理后导致形成多环二酮或酮内酯。