An efficient 1,3-dipolar cycloaddition between aromatic selenoaldehydes and nitrile oxides or nitrile imines: an easy access to selenium-containing five-membered heterocyclic ring system
作者:Masahito Segi、Katsuhiko Tanno、Masumi Kojima、Mitsunori Honda、Tadashi Nakajima
DOI:10.1016/j.tetlet.2007.01.153
日期:2007.3
1,3-Dipolar cycloaddition between aromatic selenoaldehydes, generated by thermal retro Diels–Alder reaction of anthracene cycloadducts, and nitrile oxides or nitrile imines proceeded efficiently to give the corresponding [3+2] cycloadducts as a single isomer in good yields, being 1,4,2-oxaselenazoles or 1,3,4-selenadiazoles, respectively.
蒽环加合物的热逆Diels-Alder反应与腈氧化物或腈亚胺之间产生的芳族硒醛之间的1,3-偶极环加成反应有效地进行,从而以高收率得到了相应的作为单一异构体的[3 + 2]环加合物,收率为1分别是,4,2-氧杂恶唑或1,3,4-硒二唑。