Bimacrocyclic concaveannelatedterpyridines were generated from a U-shaped nonmacrocyclic tetraalkene precursor by ring closing metathesis followed by hydrogenation. The U-shaped precursor was synthesized by condensing two aryl-tetrahydroquinolones with Eschenmoser's salt. The quinolones themselves were accessible by coupling a 2-chloroquinolone with a bis-alkenyloxy-substituted boronic acid. The concave terpyridine
双大环凹入退火三联吡啶是从 U 形非大环四烯烃前体通过闭环复分解然后氢化产生的。U 形前体是通过将两个芳基四氢喹诺酮与 Eschenmoser 盐缩合而合成的。喹诺酮本身可通过将 2-氯喹诺酮与双链烯氧基取代的硼酸偶联而获得。在铜 (I) 催化的环丙烷化反应中测试了凹三联吡啶的反应性和立体选择性。