作者:Jawahar L. Jat、Ajay K. Yadav、Chandra Bhan Pandey、Dinesh Chandra、Bhoopendra Tiwari
DOI:10.1021/acs.joc.1c02785
日期:2022.3.4
The first direct general method for N-Me aziridination of electron-deficient olefins, enones, is described using N-methyl-O-tosylhydroxylamine as the aminating agent in the presence of a Cu(OTf)2 catalyst. The aziridination of vinyl ketones, hitherto unknown for N-Me as well as N-H, has been achieved efficiently. The open-flask reaction is stereospecific, operationally simple, and additive-free. It
One-pot synthesis of γ-lactams from ketoaziridines
作者:Lorena S. R. Martelli、Otavio A. M. da Silva、Julio Zukerman-Schpector、Arlene G. Corrêa
DOI:10.1039/d3ob01568h
日期:——
The remarkable biological activities of γ-lactams have stimulated the search for efficient synthetic methods to achieve these scaffolds. In this work, we have developed a simple one-pot diastereoselective synthesis of new γ-lactams from ketoaziridines with moderate to good yields via the Horner–Wadsworth–Emmons reaction, followed by an intramolecular ester-aziridine cyclization and its opening in situ