2-(Trimethylsilyl)phenyl Trimethylsilyl Ethers as Stable and Readily Accessible Benzyne Precursors
作者:Takashi Ikawa、Shigeaki Masuda、Hiroki Nakajima、Shuji Akai
DOI:10.1021/acs.joc.7b00238
日期:2017.4.21
Stable 2-(trimethylsilyl)phenyl trimethylsilyl ethers, readily obtained from the corresponding halogenated phenols in two steps, were identified as novel benzyne precursors. These species were converted to benzynes by a domino reaction of O-desilylation, O-nonaflylation, and β-elimination under mild conditions using nonafluorobutanesulfonyl fluoride (NfF) and tetrabutylammonium triphenyldifluorosilicate
稳定的2-(三甲基甲硅烷基)苯基三甲基甲硅烷基醚很容易从相应的卤代苯酚分两步获得,被确定为新型苯炔前体。在九种条件下,使用九氟丁烷磺酰氟(NfF)和四丁基三苯基二氟硅酸铵(TBAT),通过O-去甲硅烷基化,O-非酰化和β-消除的多米诺反应将这些物质转化为苯并炔。所产生的苯并炔被各种嗜油菌捕获,从而提供了多种苯并稠合的杂环。