作者:Wenwei Lin、Ling Chen、Paul Knochel
DOI:10.1016/j.tet.2007.01.027
日期:2007.3
reactive intermediates has been achieved by the controlled elimination of readily generated 2-magnesiated diaryl sulfonates of type 2 obtained by a low temperature I/Mg- or Br/Mg-exchange starting from the corresponding halides of type 3. After trapping with furan, moderate to good yields of the desired functionalized cycloadducts of type 4 are obtained. The addition of a magnesium arylthiolate or magnesium
类型的官能化3,4- pyridynes的制备1作为高反应性的中间产物已通过型的容易产生2-镁化的二芳基磺酸盐的受控消除实现2通过低温I / Mg的或Br /镁交换的起始获得来自3型的相应卤化物。用呋喃捕集后,可获得中等至良好收率的所需类型4的官能化环加合物。还描述了向3,4-吡啶炔中添加芳基硫醇镁或苯基硒化镁,然后用亲电试剂淬灭。