Copper-Catalyzed Regioselective Intramolecular Oxidative α-Functionalization of Tertiary Amines: An Efficient Synthesis of Dihydro-1,3-Oxazines
作者:Mohit L. Deb、Suvendu S. Dey、Isabel Bento、M. Teresa Barros、Christopher D. Maycock
DOI:10.1002/anie.201304654
日期:2013.9.9
Traffic control: The hydroxy functional group directs the α‐functionalization of tertiary amines, synthesizing 1,3‐oxazines by CO bond formation. Reaction occurs with both benzylic and non‐benzylic amines. In the case of naphthoxazine synthesis, 100 % diastereoselectivity was observed. A tentative two‐pathway mechanism is proposed for the reaction.
Redox‐Neutral α,β‐Difunctionalization of Cyclic Amines
作者:Weijie Chen、YoungKu Kang、Richard G. Wilde、Daniel Seidel
DOI:10.1002/anie.201311165
日期:2014.5.12
the efficient α‐functionalization of amines, few strategies exist that enable the direct functionalization of amines in the β‐position. A general redox‐neutral strategy is outlined for amineβ‐functionalization and α,β‐difunctionalization that utilizes enamines generated in situ. This concept is demonstrated in the context of preparing polycyclic N,O‐acetals from simple 1‐(aminomethyl)‐β‐naphthols and