Palladium-Catalyzed Cross-Coupling/Annulation Cascade for Synthesis of 9-Hydroxy and 9-Aminofluorenes.
作者:Benjamin François、Luc Szczubelek、Fabienne Berrée、Thierry Roisnel、Bertrand Carboni
DOI:10.1002/adsc.201701146
日期:2018.1.17
9‐Hydroxyfluorenes are easily synthesized via a tandem Suzuki/phenolic aldolisation sequence. This process was extended to 9‐aminofluorenes by simply adding various amines as third partners. X‐ray structures and NMR studies confirmed the presence of intermolecular O−H ⋅ ⋅ ⋅ N hydrogen bonding.
9-羟基芴很容易通过串联的铃木/酚醛缩醛化序列合成。通过简单地添加各种胺作为第三伙伴将这一过程扩展到9-氨基芴。X射线结构和NMR研究证实了分子间O-H⋅⋅N氢键的存在。