Nickel-mediated reductive coupling of neopentyl bromides with activated alkenes at room temperature and its synthetic application
作者:Yan Ouyang、Yu Peng、Wei-Dong Z. Li
DOI:10.1016/j.tet.2019.06.034
日期:2019.8
Reductive coupling of sterically hindered neopentyl bromides with activated alkenes mediated by the in situ generated Ni(0) complexes along with some feedstock is achieved in good yield under the mild conditions. This practically useful method of C(sp3)−C(sp3) bond formation provides a complementary approach to the traditional conjugate addition of preformed organometallic reagents to electrophilic
在温和的条件下,以良好的收率实现了位阻新戊基溴与活化烯烃的还原偶联,活化烯烃是由原位生成的Ni(0)配合物和一些原料介导的。C(sp 3)-C(sp 3)的这种实用方法键的形成为将预先形成的有机金属试剂传统共轭加成到亲电子烯烃中提供了一种补充方法,这通常需要低温和严格排除空气和湿气。立体发散性(-)-copacamphor和(-)-ylangocamphor的形式合成证明了这种还原偶联反应的强大应用,它们是一类三环[5.3.0.0 3,8 ]癸烷倍半萜的有价值的中间体。而且,这种方便的方案导致在与前列腺素的途中容易接近Corey醛的同系物,这意味着可能涉及自由基类物质。