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Palladium‐Catalyzed Inward Isomerization Hydroaminocarbonylation of Alkenes
Ist Teil von
Angewandte Chemie International Edition, 2024-06, Vol.63 (26), p.e202406226-n/a
Auflage
International ed. in English
Ort / Verlag
Germany: Wiley Subscription Services, Inc
Erscheinungsjahr
2024
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
In contrast to the kinetically favored outward isomerization‐hydrocarbonylation of alkenes, the disfavored inward isomerization‐hydrocarbonylation of alkenes remains an important challenge. Herein, we have developed a novel and effective palladium‐catalyzed inward isomerization‐hydroaminocarbonylation of unactivated alkenes and aniline hydrochlorides for the formation of synthetically valuable α‐aryl carboxylic amides in high yields and high site‐selectivities. The high efficiency of the reaction is attributed to a relay catalysis strategy, in which the Markovnikov‐favored [PdH]‐PtBu3 catalyst is responsible for inward isomerization, while the [PdH]‐Ruphos catalyst is responsible for hydroaminocarbonylation of the resulting conjugated aryl alkenes. The reaction exhibits highly functional group tolerance and provides a new method for formal carbonylation of remote C(sp3)−H bond.
A novel palladium‐catalyzed inward isomerization and hydraminocarbonylation of unactivated alkenes for the synthesis of α‐aryl carboxylic amides has been developed. The combination isomerization‐responsible catalyst and hydrocarbonylation‐responsible catalyst was found to be a highly effective strategy to render the reaction feasible. The reaction shows highly functional group compatibility and site‐selectivity.