We disclose a palladium and urea ligand-mediated heteroannulation of 2-bromophenols and 1,3-dienes. This method addresses synthetic challenges present in the palladium-catalyzed heteroannulation of bifunctional reagents and olefins by engaging a diverse scope of coupling partners under a unified set of reaction conditions. Our recently developed urea ligand platform outperforms phosphine ligands to generate the dihydrobenzofuran motif in a convergent manner.

中文翻译：

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通过尿素配体使 2-溴酚与 1,3-二烯异环化聚合合成二氢苯并呋喃

我们公开了钯和脲配体介导的 2-溴酚和 1,3-二烯的异环化。该方法通过在一组统一的反应条件下结合不同范围的偶联伙伴来解决钯催化的双功能试剂和烯烃的异环化中存在的合成挑战。我们最近开发的脲配体平台优于膦配体，以收敛的方式生成二氢苯并呋喃基序。