Cyclotrimerisation catalytique d'alcynes par des complexes du nickel formés “in situ”
作者:P. Alphonse、F. Moyen、P. Mazerolles
DOI:10.1016/0022-328x(88)80249-3
日期:1988.5
Catalytic cyclotrimerization of acetylenic compounds by transient complexes formed in the reduction of nickel halides by magnesium, occurs with many alkynes; however, this cyclization is hindered when bulky groups are close neighbors of the triple bond or when acceptor groups are in the α position with respect to the unsaturated carbon. On the other hand, the yield of trimer increases to become quantitative
许多炔烃通过在镁还原卤化镍中形成的瞬时络合物催化炔属化合物催化环三聚化。然而,当庞大的基团是三键的近邻或当受体基团相对于不饱和碳在α位时,这种环化作用受到阻碍。另一方面,三聚体的产率随着释放的取代基而增加,变得定量。