Formation of cyclic sulfonamides via an unusual 8-endo-trig Heck olefination reaction
作者:Johannes E.M.N. Klein、Helge Műller-Bunz、Yannick Ortin、Paul Evans
DOI:10.1016/j.tetlet.2008.10.004
日期:2008.12
The synthesis of the novel benz[c]azocines, 11a and 11b was achieved following an 8-endo-trig selective intramolecular Heck reaction. Optimisation of this reaction demonstrated that inclusion of both tetra-n-butylammonium sulfate and water was essential for its success. No products from the corresponding 7-exo-trig process were encountered under these conditions.
新型苯并[ c ]偶氮星11a和11b的合成是通过8-内-trig选择性分子内Heck反应实现的。该反应的优化表明,同时加入四正丁基硫酸铵和水对于其成功至关重要。在这些条件下,未遇到来自相应的7- exo- trig工艺的产品。