1534355-08-2Relevant academic research and scientific papers
DIRECT STEREOSPECIFIC SYNTHESIS OF UNPROTECTED AZIRIDINES FROM OLEFINS
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Page/Page column 64; 65, (2015/07/16)
A method for the direct stereospecific conversion of structurally diverse mono-, di-, tri- and tetra-substituted olefins to N-H, N-alkyl, N-cycloalkyl, or N-aralkyl aziridines using a hydroxylamine amination agent with transition metal catalyst. The method is operationally simple (i.e., one-pot), scalable and fast at ambient temperature.
Direct stereospecific synthesis of unprotected N-H and N-Me aziridines from olefins
Jat, Jawahar L.,Paudyal, Mahesh P.,Gao, Hongyin,Xu, Qing-Long,Yousufuddin, Muhammed,Devarajan, Deepa,Ess, Daniel H.,Kurti, Laszlo,Falck, John R.
, p. 61 - 65 (2014/03/21)
Despite the prevalence of the N-H aziridine motif in bioactive natural products and the clear advantages of this unprotected parent structure over N-protected derivatives as a synthetic building block, no practical methods have emerged for direct synthesis of this compound class from unfunctionalized olefins. Here, we present a mild, versatile method for the direct stereospecific conversion of structurally diverse mono-, di-, tri-, and tetrasubstituted olefins to N-H aziridines using O-(2,4-dinitrophenyl)hydroxylamine (DPH) via homogeneous rhodium catalysis with no external oxidants. This method is operationally simple (i.e., one-pot), scalable, and fast at ambient temperature, furnishing N-H aziridines in good-to-excellent yields. Likewise, N-alkyl aziridines are prepared from N-alkylated DPH derivatives. Quantum-mechanical calculations suggest a plausible Rh-nitrene pathway.
