the chain: A quadruple homologation of a boronic ester converts a simple vinyl iodide into a complex precursor to faranal with very high levels of diastereo‐ and enantiocontrol. This enables the synthesis of (+)‐faranal to be completed in just six steps and 18 % overall yield from propyne.
在链上增加链接:
硼酸酯的四倍同系物将简单的
碘乙烯转变成具有很高非对映和对映控制
水平的法呢醛的复杂前体。这样,仅需六个步骤即可完成(+)-
呋喃醛的合成,
丙炔的总收率可达18%。