Regioselective Arylation Reactions of Biphenyl-2-ols, Naphthols, and Benzylic Compounds with Aryl Halides under Palladium Catalysis
作者:Tetsuya Satoh、Jun-ichi Inoh、Yoshiki Kawamura、Yuichiro Kawamura、Masahiro Miura、Masakatsu Nomura
DOI:10.1246/bcsj.71.2239
日期:1998.9
Biphenyl-2-ols undergo regioselective mono- and diarylation upon a treatment with aryl iodides in the presence of a palladium catalyst in DMF using Cs2CO3 as a base to produce 1,1′ : 2′,1″-terphenyl-2-ol and 2′,6′-diphenylbiphenyl-2-ol and their derivatives. The reaction of 1-naphthol selectively occurs at its 8-position to give 8-aryl-1-naphthols. In the reaction of 2-naphthol with aryl bromides, diarylated
在钯催化剂存在下,在 DMF 中,使用 Cs2CO3 作为碱,用芳基碘化物处理后,联苯 2-醇发生区域选择性单芳基化和二芳基化,生成 1,1': 2',1"-三联苯-2-醇和2',6'-diphenylbiphenyl-2-ol 及其衍生物。1-萘酚的反应选择性地发生在其 8-位,得到 8-芳基-1-萘酚。在 2-萘酚与芳基溴化物的反应中,二芳基化合物 1-(2-芳基苯基)-2-萘酚作为单一的主要产物形成。在类似条件下,苄基酮、苯基乙腈和苯基乙酸甲酯在其苄基位置被芳基化。