Synthesis and reactivity of the first bis(crown ether) enediyne
作者:Burkhard König、Heike Rütters
DOI:10.1016/s0040-4039(00)73220-5
日期:1994.5
The synthesis of a new bis(crown ether)-enediyne 3via palladium catalyzed coupling reactions is described. On treatment with sodium-hexafluorophosphate two cations are bound by the title compound 3; with potassium ions the sandwich complex 5 is formed. The thermal reactivity of the enediyne moiety towards cyclisation was investigated by differential scanning calorimetry, whereby the metal complexes