3-Sulfolenes 1 with various substituents at C-2 underwent [4+2] cycloaddition reactions with p-toluenesulfonyl isocyanate to give the teterahydropyridinones 4. Through N-detosylation and Hg(II)-mediated electrophilic addition/intramolecular cyclization of 4e and 4f, the indolizidine and quinolizidine compounds 7a/7b and 8 were synthesized, respectively.
在C-2处具有各种取代基的3-Sulfolenes 1与对
甲苯磺酰基
异氰酸酯进行[4 + 2]环加成反应,得到四氢
吡啶并酮4。通过N-去
甲苯基化和Hg(II)介导的4e和4f的亲电加成/分子内环化反应,分别合成了
吲哚并
咪唑和
喹唑烷化合物7a / 7b和8。