A versatile synthesis of diverse 3,4-fused cinnolines via the base-catalysed condensation of 2-amino-2′-nitrobiaryls
作者:Åsa Slevin、Tobias Koolmeister、Martin Scobie
DOI:10.1039/b618318b
日期:——
Benzo[c]cinnolines, thieno[3,2-c]cinnolines, pyrido[3,2-c]cinnolines and the previously undescribed quinoxalino[6,7-c]cinnoline ring system are conveniently prepared by a short synthetic route comprised of Suzuki coupling, base-catalysed cyclisation and deoxygenation. The use of tandem borylation-Suzuki coupling further extends the scope of this process to include highly substituted benzo[c]cinnolines
苯并[c] cinnolines,噻吩并[3,2-c] cinnolines,吡啶基[3,2-c] cinnolines和先前未描述的喹喔啉[6,7-c] cinnoline环系可通过短合成路线方便地制备,包括铃木偶联,碱催化的环化和脱氧。串联硼酸化-Suzuki偶联的使用进一步扩展了该方法的范围,以包括高度取代的苯并[c]肉桂酚。