Photoreactions of β-aziridinylacrylonitriles and acrylates with alkenes: the substituent effects on the formation of [3+2] cycloadducts
作者:Keitaro Ishii、Takuya Sone、Takahide Shigeyama、Masahiro Noji、Shigeo Sugiyama
DOI:10.1016/j.tet.2006.08.098
日期:2006.11
photoreactions of N-tritylaziridines 7–9 possessing diester, dinitrile, and butadiene groups in the side chain with electron-deficient alkenes yielded 2,3-cis-pyrrolidine derivatives 29, 30, and 33 exclusively. In particular, the dinitrile 8 also reacted with non-electron-deficient alkenes. The formal synthesis of the indolizidine fragment 10 of stellettamides starting from the pyrrolidine (E)-33 was achieved in
光化学C,三取代的氮丙啶的C-键裂解3 - 6和随之而来的[3 + 2]与缺电子烯烃的环加成,得到新颖的头-头加成物(1,2,3,5-四取代的吡咯烷)和有选择地有效率的。氮丙啶3和5与分子氧反应,分别得到二恶唑烷26和裂解产物。结果可能表明,氮丙啶的C,C键双自由基裂解。的光反应Ñ -tritylaziridines 7 - 9具有二酯,二腈,和丁二烯基团与缺电子烯烃侧链,得到2,3-顺式吡咯烷衍生物29,30,和33只。特别地,二腈8也与非电子不足的烯烃反应。的吲哚里片段的正式合成10从吡咯烷(起始stellettamides的ë) - 33被以方便的方式来实现。