Copper-Catalyzed Asymmetric 1,4-Addition of Alkenyl Alanes to <i>N</i>-Substituted-2-3-dehydro-4-piperidones
作者:Daniel Müller、Alexandre Alexakis
DOI:10.1021/ol3004436
日期:2012.4.6
Readily available vinyl alanes are used in the Cu-catalyzed asymmetric conjugate addition reaction to N-substituted-2-3-dehydro-4-piperidones. The enhanced reactivity of recently developed and easily prepared phosphine amine ligands in combination with inexpensive Cu(II)naphtenate (CuNp) allows the introduction of a great variety of alkenyl, alkyl, and aryl aluminums in high enantioselectivity.
Corrigendum: A Multicomponent Ni-, Zr-, and Cu-Catalyzed Strategy for Enantioselective Synthesis of Alkenyl-Substituted Quaternary Carbons
作者:Kevin P. McGrath、Amir H. Hoveyda
DOI:10.1002/anie.201407837
日期:2014.10.6
Transmetal-Catalyzed Enantioselective Cross-Coupling Reaction of Racemic Secondary Benzylic Bromides with Organoaluminum Reagents
transmetal-catalyzed enantioselective cross-coupling reaction of secondary benzylic electrophiles with organoaluminum reagents has been developed. The reaction of secondary benzylic electrophiles with alkynylaluminum reagents provides a mild way for the chiral propargyl compounds bearing aromatic group in high yields with good enantioselectivitiesusing NiBr2·diglyme and (R)-iPr-Pybox as the catalytic system. The
Catalytic Enantioselective Conjugate Addition of Stereodefined Di‐ and Trisubstituted Alkenylaluminum Compounds to Acyclic Enones
作者:Kevin P. McGrath、Aran K. Hubbell、Yuebiao Zhou、Damián Padín Santos、Sebastian Torker、Filippo Romiti、Amir H. Hoveyda
DOI:10.1002/adsc.201901435
日期:2020.1.23
Catalytic enantioselectiveconjugateaddition (ECA) reactions with readily accessible and stereochemically defined E‐, Z‐, di‐ and trisubstituted alkenyl aluminum compounds are disclosed. Transformations are promoted by various NHC‐copper catalysts (NHC=N‐heterocyclic carbene), which are derived from enantiomerically pure sulfonate imidazolinium salts. The desired products were obtained in up to 89%