The title compound yields a photodimer on u.v. irradiation, and not a phototrimer as described in the literature. This dimer has been shown to be 2,9-dibenzyl-6,12-diphenyl-dispiro[4.1.4.1]dodecan-1,8-dione (XII); its stereochemistry has been elucidated by chemical and spectroscopic methods.
标题化合物在紫外线照射下产生光二聚体,而不是文献中所述的光三聚体。已经表明该二聚体是2,9-二苄基-6,12
-二苯基-二螺[4.1.4.1] dodecan-1,8-二酮(XII); m。其立体
化学已通过
化学和光谱方法阐明。