C-H Bond Functionalization via Catalytic Migrative Cross-Coupling
Third-party funded project
Project title C-H Bond Functionalization via Catalytic Migrative Cross-Coupling
Principal Investigator(s) Baudoin, Olivier
Organisation / Research unit Departement Chemie / Synthetische Chemie (Baudoin)
Project start 01.04.2016
Probable end 31.03.2019
Status Completed
Abstract
This proposal is dedicated to the development of a new C-H functionalization strategy allowing to selectively create a C-C bond at the terminal position of an alkane fragment. This strategy is based on the ability of group 10 metals to migrate along an alkyl chain via the ß-H elimination/p-complex rotation/insertion mechanism and undergo reductive elimination at the least substituted terminal position. This proposal features 3 Work Packages (WP) of progressively more challenging character. In WP1, the palladium(0)-catalyzed ligand-controlled regioconvergent coupling of organozinc compounds, obtained from mixtures of alkyl bromides, is proposed. Coupling this migrative cross-coupling with an initial C-H bromination step would allow to selectively functionalize alkanes in two-steps at the terminal carbon. WP2 features the development of a nickel-catalyzed version of the preceding migrative coupling, which would offer a useful complementarity both in terms of scope and mechanism. The main purpose of WP3 is to replace organozinc reagents employed in the Ni-catalyzed process (WP2) with photoredox-generated radicals, such as those generated from carboxylic acids or amines in combination with an Ir-based photocatalyst. This modification would allow to significantly expand the scope and practicability of this C-H functionalization strategy.
Keywords cross-coupling, organotransition metal catalysis, C-H functionalization
Financed by Swiss National Science Foundation (SNSF)

Published results ()

  ID Autor(en) Titel ISSN / ISBN Erschienen in Art der Publikation
3692713  Dupuy, Stéphanie; Zhang, Ke-Feng; Goutierre, Anne-Sophie; Baudoin, Olivier  Terminal-Selective Functionalization of Alkyl Chains by Regioconvergent Cross-Coupling  1433-7851 ; 1521-3773  Angewandte Chemie International Edition  Publication: JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift) 
   

MCSS v5.8 PRO. 0.620 sec, queries - 0.000 sec ©Universität Basel  |  Impressum   |    
10/08/2020