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  4. Exploitation of Unconventional Electrophiles in Enantioselective Pd(0)-Catalyzed C-H Functionalizations
 
doctoral thesis

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

Grosheva, Daria  
2019

Asymmetric metal-catalyzed C-H functionalization has enjoyed great success as a powerful strategy for the rapid construction of elaborate structures from simple precursors. For example, aryl (pseudo)halides have been extensively employed as electrophilic substrates in enantioselective Pd(0)-catalyzed syntheses of heterocycles. However, alternative substrates for C-H functionalizations are far less developed. This thesis focuses on the exploration of unconventional electrophilic partners for asymmetric Pd(0)-catalyzed C-H functionalizations, allowing access to relevant N-heterocyclic scaffolds. An enantioselective functionalization of readily accessible ketene aminal phosphates resulted in the formation of versatile isoindolines. A new class of bulky electron-rich phosphine ligands, designed explicitly for this transformation, enabled efficient functionalization at ambient temperature, resulting in high enantioselectivities of the desired products. Employing perfluoroalkyl imidoyl chlorides as electrophilic partners gave rise to previously inaccessible chiral 1H-isoindoles. The C-H functionalization strategy not only enabled efficient asymmetric construction of three-dimensional structures with functional exit vectors but also allowed the products to be additionally decorated with a perfluoroalkyl group and a quaternary stereogenic center.

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Type
doctoral thesis
DOI
10.5075/epfl-thesis-9283
Author(s)
Grosheva, Daria  
Advisors
Cramer, Nicolai  
Jury

Prof. Jieping Zhu (président) ; Prof. Nicolai Cramer (directeur de thèse) ; Prof. Jérôme Waser, Prof. Martin Oestreich, Prof. Michael Willis (rapporteurs)

Date Issued

2019

Publisher

EPFL

Publisher place

Lausanne

Public defense year

2019-03-08

Thesis number

9283

Total of pages

501

Subjects

Palladium

•

Asymmetric Catalysis

•

C-H Functionalization

•

Ligand Design

•

N-Heterocycles

EPFL units
LCSA  
Faculty
SB  
School
ISIC  
Doctoral School
EDCH  
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/155771
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