Exploitation of Unconventional Electrophiles in Enantioselective Pd(0)-Catalyzed C-H Functionalizations

Asymmetric metal-catalyzed C-H functionalization is a powerful strategy for the rapid generation of complex target molecules from simple precursors. While aryl (pseudo) halides have been used as electrophilic substrates in enantioselective Pd(0)-catalyzed syntheses of N-heterocycles, alternative partners for C-H functionalizations remain underexplored. Herein we describe the first application of ketene aminal phosphates as competent electrophiles in a Pd(0)-catalyzed desymmetrization. This transformation allowed the efficient synthesis of chiral isoindolines in a highly enantioselective fashion. Furthermore, intending to introduce sought-after perfluoroalkyl substituents, we explored intramolecular C-H functionalization of imidoyl chlorides resulting in the asymmetric preparation of previously inaccessible 1H-isoindoles. Tailored chiral monodentate ligands afforded high levels of enantioinduction in both transformations.


Publié dans:
Chimia, 73, 4, 262-267
Présenté à:
Fall Meeting of the Swiss-Chemical-Society (SCS), Lausanne, SWITZERLAND, Sep 07, 2018
Année
Apr 01 2019
Publisher:
Bern, SWISS CHEMICAL SOC
ISSN:
0009-4293
Mots-clefs:
Laboratoires:




 Notice créée le 2019-06-25, modifiée le 2019-07-28


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