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.
Stereoselective Copper-Catalyzed Cross-Coupling of Aziridines with Benzimidazoles via Nucleophilic Ring Opening and C(sp<sup>2</sup>)–H Functionalization
A copper-catalyzed cross-coupling of 2-alkyl-/2-arylaziridines with benzimidazoles is reported. The reactions involve a regiospecific ring opening of aziridines with benzimidazoles to give benzoimidazolylethylamine derivatives that lead to dehydrogenative cross-coupling between C(sp2)-H and N–H bonds to produce dihydroimidazobenzimidazoles. Optically active 2-arylaziridines can be stereoinvertivebly
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
an ortho-C(sp2) atom of aromatic acids with aliphatic aziridines to construct the β-arylethylamine skeleton via C–H activation has been developed. The reaction proceeded under mild conditions with great substrate scope. Meanwhile, the β-arylethylamine skeleton in drugs or bioactive compounds could be easily generated in a single step. A catalytic amount of cesium carbonate was crucial to realizing
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