Pd–Cu bimetallic catalyzed or Cu‐promoted preparation of attached‐ring bis(heterocyclic) fused cyclobutenes in a totally controlled fashion by using alkyne homocoupling, as well as a double [2+2] cyclization of the resulting bis(allenyne) in a domino sequence has been accomplished (see scheme).
一种高效的Pd-Cu双
金属催化或
铜促进的制备方法,它使用炔类均
偶联剂以完全可控的方式完全控制双环双(杂环)稠合
环丁烯,并将生成的双(亚炔)双环[2 + 2]环化在多米诺骨牌序列中已经完成(参见方案)。