Palladium-Catalyzed Arylation of Methylene-Bridged Polyarenes: Synthesis and Structures of 9-Arylfluorene Derivatives
作者:Jheng-Jhih Chen、Satoru Onogi、Ya-Chu Hsieh、Chien-Chi Hsiao、Shuhei Higashibayashi、Hidehiro Sakurai、Yao-Ting Wu
DOI:10.1002/adsc.201100931
日期:2012.5.21
and tricyclohexylphosphine, the reaction of fluorene with haloarenes generated 9‐arylfluorenes in good to excellent yields. The scope and limitations of the coupling reaction were investigated. This synthetic protocol is more efficient than conventional methods. A wide range of functional groups, including alkyl, alkoxy, ester, and nitrile, can tolerate the reaction conditions herein. Sterically congested
在由乙酸钯(II)和三环己基膦组成的催化体系的存在下,芴与卤代芳烃的反应生成的9-芳基芴的收率非常好。研究了偶联反应的范围和局限性。该合成协议比常规方法更有效。各种各样的官能团,包括烷基,烷氧基,酯和腈,可以耐受本文的反应条件。立体拥挤的卤代芳烃也给出了令人满意的结果。此外,该合成方法还用于制备9,9-二芳基芴和四芳基萘。根据反应条件的不同,碗形sum素的芳基化反应可以生成单芳基sum素,也可以是唯一的产物,也可以是另一种被二芳基取代的产物。