國家衛生研究院 NHRI:Item 3990099045/13539
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    题名: Mild and efficient tunable bronsted acidic ionic liquid catalyzed O-acetylation and O-trimethylsilylation with trimethylsilyl acetate (TMSOAc) and hexamethyldisilazane (HMDS)
    作者: Pantawane, AR;Thul, M;Lin, YJ;Lin, M;Lin, W;Julakanti, SR;Wu, HR;Luo, SY
    贡献者: Institute of Biotechnology and Pharmaceutical Research
    摘要: This report discloses a mild and efficient O-acetylation using easily accessible TMSOAc as a novel acetyl reagent and O-trimethylsilylation using HMDS for various alcohols catalyzed by tunable Bronsted acidic ionic liquids (TBAILs). Imidazolium-based TBAILs were prepared by a two-step atom-economic reaction and acidities measured by using UV-visible spectroscopy. Both protections for alcohols were accomplished at room temperature with good to excellent yields, while the products and TBAILs were separated by simple work-up for O-silylation and column chromatography for O-acetylation. Notably, with the simple post-process, TBAILs catalyst in this solvent free method easily recovered and recycled several times without significant degradation.
    日期: 2021-07-07
    關聯: Catalysts. 2021 Jul 7;11(7):Article number 825.
    Link to: http://dx.doi.org/10.3390/catal11070825
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=2073-4344&DestApp=IC2JCR
    Cited Times(WOS): https://www.webofscience.com/wos/woscc/full-record/WOS:000676516600001
    Cited Times(Scopus): https://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85109097991
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