Rhenium-catalyzed Regioselective Synthesis of Phenol Derivatives from 1,3-Diesters and Terminal Alkynes
作者:Yoichiro Kuninobu、Takashi Iwanaga、Mitsumi Nishi、Kazuhiko Takai
DOI:10.1246/cl.2010.894
日期:2010.8.5
Treatment of malonates without a substituent at the active methylene moiety with terminal alkynes gave salicylates regioselectively. In contrast, when malonates bearing a substituent at the active methylene moiety were used, cyclic β-keto esters were generated regioselectively. Treatment of the formed cyclic β-keto esters with In(OTf)3 gave phenol derivatives via decarboxylation.
对没有取代基的活性亚甲基的马隆酸酯与末端炔烃反应,选择性地产生了水杨酸酯。相反,当使用带有取代基的活性亚甲基的马隆酸酯时,选择性地产生了环状β-酮酸酯。将形成的环状β-酮酸酯与In(OTf)3反应,通过脱羧化生成了酚类衍生物。