Reinvestigation of dimerization of Z-N-alkylarylmethylideneindoxyls upon exposure to UV-vis radiation
作者:O. L. Babii、A. A. Hodak、A. S. Peregudov、V. I. Polshakov、Z. A. Starikova、Yu. A. Borisov、Yu. V. Fedorov、V. S. Velezheva
DOI:10.1007/s11172-017-1739-2
日期:2017.2
N-Alkyl-2-arylmethylideneindoxyls upon exposure to UV or visible light undergo dimerization not to cyclobutane adducts as it has been reported earlier, but to spiropyrano[3,2-b]-pseudoindoxyls with a spiropseudoindoxyl fragment characteristic of many natural alkaloids. The structure of spiropyranopseudoindoxyls was established by NMR spectroscopy and X-ray crystallography.
N-烷基-2-芳基亚甲基吲哚在紫外线或可见光照射下会发生二聚反应,而不是像早先报道的那样变成环丁烷加合物,而是变成具有许多天然生物碱所特有的螺旋伪吲哚苷片段的螺旋吡喃并[3,2-b]-伪吲哚苷。通过核磁共振光谱和 X 射线晶体学,确定了螺吡喃假吲哚啉的结构。