The cyclization reaction between 1 and 2 was carried out in high dilution and was photochemically regulated to give 1â¶1 (29â33 membered rings, 52â55%) and 2â¶2 (58â66 membered rings, 20â49%) adducts as photo-controllable compounds.
                                    1和2之间的环化反应是在高稀释条件下进行的,且通过光
化学调控,得到了1â¶1(29–33个成员环,产率52–55%)和2â¶2(58–66个成员环,产率20–49%)的加合物,作为光可调控的化合物。