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Photoredox-mediated hydroalkylation and hydroarylation of functionalized olefins for DNA-encoded library synthesis
Ist Teil von
Chemical science (Cambridge), 2021-09, Vol.12 (36), p.1236-1245
Ort / Verlag
England: Royal Society of Chemistry
Erscheinungsjahr
2021
Quelle
Free E-Journal (出版社公開部分のみ)
Beschreibungen/Notizen
DNA-encoded library (DEL) technology features a time- and cost-effective interrogation format for the discovery of therapeutic candidates in the pharmaceutical industry. To develop DEL platforms, the implementation of water-compatible transformations that facilitate the incorporation of multifunctional building blocks (BBs) with high C(sp
3
) carbon counts is integral for success. In this report, a decarboxylative-based hydro
alkylation
of DNA-conjugated trifluoromethyl-substituted alkenes enabled by single-electron transfer (SET) and subsequent hydrogen atom termination through electron donor-acceptor (EDA) complex activation is detailed. In a further photoredox-catalyzed hydro
arylation
protocol, the coupling of functionalized, electronically unbiased olefins is achieved under air and within minutes of blue light irradiation through the intermediacy of reactive (hetero)aryl radical species with full retention of the DNA tag integrity. Notably, these processes operate under mild reaction conditions, furnishing complex structural scaffolds with a high density of pendant functional groups.
DNA-encoded library (DEL) technology facilitates the rapid identification of therapeutic candidates in pharmaceutical settings. Herein, the development of photoredox-mediated hydrocarbofunctionalization protocols of olefins is described.