Citation: Zeng Yijie, Duan Yue, Zhao Hui, Hu Xiangguo. Efficient and Chemoselective Deprotection of N-t-Butyloxycarbonyl Group Mediated by Selectfluor[J]. Chinese Journal of Organic Chemistry, ;2018, 38(7): 1712-1717. doi: 10.6023/cjoc201801036 shu

Efficient and Chemoselective Deprotection of N-t-Butyloxycarbonyl Group Mediated by Selectfluor

Zeng Yijie ^a ,
Duan Yue ^a ,
Zhao Hui ^b,, ,
Hu Xiangguo ^a,,

a.
National Engineering Research Center for Carbohydrate Synthesis, Jiangxi Normal University, Nanchang 330022
b.
Anhui Engineering Technology Research Center for Extraction and Isolation of Active Components, Anhui Academy of Applied Technology, Hefei 230031

Corresponding author: Zhao Hui, zh1986@iccas.ac.cn Hu Xiangguo, huxiangg@iccas.ac.cn
Received Date: 25 January 2018
Revised Date: 12 February 2018
Available Online: 16 July 2018
Fund Project: Project supported by the National Natural Science Foundation of China (No. 21502076), the Natural Science Foundation of Jiangxi Province (No. 20161BAB213068), the Hundred-Talent Program (Hefei) and the Outstanding Young Talent Program of Jiangxi Province (No. 20171BCB23039)the Hundred-Talent Program (Hefei) and the Outstanding Young Talent Program of Jiangxi Province 20171BCB23039the National Natural Science Foundation of China 21502076the Natural Science Foundation of Jiangxi Province 20161BAB213068

Figures(1)

Selectfluor, 1-chloromethyl-4-fluoro-1, 4-diazoniabicyclo-[2.2.2] octane bis(tetrafluoroborate), is among the most popular fluorinating reagents owning to its commercially availability and non-hygroscopic property. The discovery and understanding of new reactivities of selectfluor are thus important for reaction design and optimization when this popular reagent is employed. It has been found that selectfluor could selectively remove Boc group from doubly protected amines in acetonitrile. This deprotection could be of interest when compared to other reported methods, not only because selectfluor is a solid and easy-to-handle, but also because the reaction is mild, operationally simple and chemoselective. The potential usefulness of this method is demonstrated by the deprotection of a series of protected amino acids and a one-step synthesis of pharmaceutically important purine derivative. The NMR experiments conducted in CD₃CN explain why stoichiometric amount of selectfluor is needed for a successful reaction.
- selectfluor,
- t-butyloxycarbonyl,
- deprotection,
- selectivity,
- synthesis
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