Iron(<scp>ii</scp>)-catalyzed intermolecular aziridination of alkenes employing hydroxylamine derivatives as clean nitrene sources
作者:Georgina Kirby、Laurence Grimaud、Maxime R. Vitale、Guillaume Prestat、Farouk Berhal
DOI:10.1039/d1gc03495b
日期:——
The iron-catalyzed intermolecular aziridination of alkenes with hydroxylamine derivatives is described. Using simple iron(II) sources and readily available ligands, the formal (2 + 1) cycloaddition process proved to be efficient on both styrenes and aliphatic alkenes, providing access to a wide range of aziridines. In these particularly sustainable reaction conditions, yields up to 89% could be obtained
Ni-Catalyzed Carboxylation of Aziridines en Route to β-Amino Acids
作者:Jacob Davies、Daniel Janssen-Müller、Dmitry P. Zimin、Craig S. Day、Tomoyuki Yanagi、Jonas Elfert、Ruben Martin
DOI:10.1021/jacs.1c01916
日期:2021.4.7
pressure is disclosed. The protocol is characterized by its mild conditions, experimental ease, and exquisite chemo- and regioselectivity pattern, thus unlocking a new catalytic blueprint to access β-aminoacids, important building blocks with considerable potential as peptidomimetics.
Highly Regioselective Nickel-Catalyzed Cross-Coupling of <i>N</i>-Tosylaziridines and Alkylzinc Reagents
作者:Kim L. Jensen、Eric A. Standley、Timothy F. Jamison
DOI:10.1021/ja505823s
日期:2014.8.6
ligand-controlled, nickel-catalyzed cross-coupling of aliphatic N-tosylaziridines with aliphatic organozinc reagents. The reaction protocol displays complete regioselectivity for reaction at the less hindered C-N bond, and the products are furnished in good to excellent yield for a broad selection of substrates. Moreover, we have developed an air-stablenickel(II) chloride/ligand precatalyst that can be handled and
Synthesis of β-Phenethylamines via Ni/Photoredox Cross-Electrophile Coupling of Aliphatic Aziridines and Aryl Iodides
作者:Talia J. Steiman、Junyi Liu、Amanuella Mengiste、Abigail G. Doyle
DOI:10.1021/jacs.0c01724
日期:2020.4.22
A photoassisted Ni-catalyzed reductive cross-coupling between tosyl-protected alkyl aziridines and commercially available (hetero)aryl iodides is reported. This mild and modular method proceeds in the absence of stoichiometric heterogeneous reductants and uses an inexpensive organic photocatalyst to access medicinally valuable β-phenethylamine derivatives. Unprecedented reactivity was achieved with
The synthesis of γ-lactams is reported by a formal (3+2) cycloaddition between readily available ketenes and aziridines or a one-pot formal (2+1+2) cycloaddition using imines as aziridine precursors. The method is practical, is scalable, and affords high yields. It also offers a high level of regio- and diastereoselectivity on a wide range of substrates as well as a high stereoselectivity in the case