Synthesis of Redox-Active Phenanthrene-Fused Heteroarenes by Palladium-Catalyzed C–H Annulation
作者:Jin Hyeok Jang、Seongmo Ahn、Soo Eun Park、Soeun Kim、Hye Ryung Byon、Jung Min Joo
DOI:10.1021/acs.orglett.9b04545
日期:2020.2.21
Pd-catalyzed C-H annulation reactions of halo- and aryl-heteroarenes were developed using readily available o-bromobiaryls and o-dibromoaryls, respectively. A variety of five-membered heteroarenes rapidly provided the corresponding phenanthrene-fused heteroarenes, which led to the identification of phenanthro-pyrazole and thiazole as new, stable -2 V redox couples. The flexible syntheses and tunability
分别使用容易获得的邻溴二芳基和邻二溴芳基开发了Pd催化的卤代芳基和芳基杂芳烃的CH环合反应。各种五元杂芳烃迅速提供了相应的菲稠杂芳烃,从而将菲咯并吡唑和噻唑鉴定为新的,稳定的-2 V氧化还原对。这些唑类稠合的菲在很宽的范围内具有灵活的合成能力和氧化还原电位的可调性,有望促进它们作为氧化还原活性有机功能材料的应用。