3-Hydroxy-2-(trialkylsilyl)phenyl Triflate: A Benzyne Precursor Triggered via 1,3-C-sp<sup>2</sup>-to-O Silyl Migration
作者:Yong-Ju Kwon、Young-Kyo Jeon、Ha-Bin Sim、In-Young Oh、Inji Shin、Won-Suk Kim
DOI:10.1021/acs.orglett.7b03160
日期:2017.11.17
3-Hydroxy-2-(trialkylsilyl)phenyl triflates are presented as new versatile hydroxyaryne precursors. These are base-activated aryne precursors induced via a C-sp2-to-O 1,3-Brook rearrangement. The reaction of various arynophiles and 3-trialkylsiloxybenzyne generated from 3-hydroxy-2-(trialkylsilyl)phenyl triflateefficiently afforded highly regioselective phenol derivatives. Furthermore, through crossover