Pu-Zhang Zi , Quan-Hong Zhao , Zhan-Cai Ma , Xiao-Lin Ren , Xing-Bang Liu , Yi-Wei Qiao , Lin-Wen Wei , Song Liu , Yuan Huang
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Transition metal-free Csp3-Csp3 bond-forming reactions of N-tosylaziridines and gem-diborylalkanes
The incorporation of additional Csp3 atoms into candidate drugs may enhance their pharmacological properties. Nevertheless, it remains challenging to construct desired Csp3-Csp3 bonds efficiently and practically. The present article reports a novel Csp3-Csp3 bond-forming reaction of 2-aryl/alkyl substituted aziridines with gem-diborylalkanes under tranisiton metal free conditions. A wide range of γ-gem-diboronate esters substituted amines can be accessed in good yield and regioselectivity. The results demonstrated that various aziridines could react with gem-diborylalkanes in the presence of LiTMP as the base within 15 min at ambient temperature.
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