72216-06-9Relevant articles and documents
A General Approach to Stereospecific Cross-Coupling Reactions of Nitrogen-Containing Stereocenters
Binayeva, Meruyert,Biscoe, Mark R.,Diane, Mohamed,Ma, Xinghua,Ralph, Glenn,Wang, Chao-Yuan,Zhao, Haoran,Zhao, Shibin
supporting information, p. 781 - 791 (2020/03/11)
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Tackling N-Alkyl Imines with 3d Metal Catalysis: Highly Enantioselective Iron-Catalyzed Synthesis of α-Chiral Amines
Blasius, Clemens K.,Gade, Lutz H.,Heinrich, Niklas F.,Vasilenko, Vladislav
supporting information, p. 15974 - 15977 (2020/07/04)
A readily activated iron alkyl precatalyst effectively catalyzes the highly enantioselective hydroboration of N-alkyl imines. Employing a chiral bis(oxazolinylmethylidene)isoindoline pincer ligand, the asymmetric reduction of various acyclic N-alkyl imines provided the corresponding α-chiral amines in excellent yields and with up to >99 % ee. The applicability of this base metal catalytic system was further demonstrated with the synthesis of the pharmaceuticals Fendiline and Tecalcet.
Direct α-C-H bond functionalization of unprotected cyclic amines
Chen, Weijie,Ma, Longle,Paul, Anirudra,Seidel, Daniel
, p. 165 - 169 (2018/02/06)
Cyclic amines are ubiquitous core structures of bioactive natural products and pharmaceutical drugs. Although the site-selective abstraction of C-H bonds is an attractive strategy for preparing valuable functionalized amines from their readily available parent heterocycles, this approach has largely been limited to substrates that require protection of the amine nitrogen atom. In addition, most methods rely on transition metals and are incompatible with the presence of amine N-H bonds. Here we introduce a protecting-group-free approach for the α-functionalization of cyclic secondary amines. An operationally simple one-pot procedure generates products via a process that involves intermolecular hydride transfer to generate an imine intermediate that is subsequently captured by a nucleophile, such as an alkyl or aryl lithium compound. Reactions are regioselective and stereospecific and enable the rapid preparation of bioactive amines, as exemplified by the facile synthesis of anabasine and (-)-solenopsin A.