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Utilizing Carbonyl Coordination of Native Amides for Palladium-Catalyzed C(sp3 )-H Olefination.


ABSTRACT: PdII -catalyzed C(sp3 )-H olefination of weakly coordinating native amides is reported. Three major drawbacks of previous C(sp3 )-H olefination protocols, 1)?in situ cyclization of products, 2)?incompatibility with ?-H-containing substrates, and 3)?installation of exogenous directing groups, are addressed by harnessing the carbonyl coordination ability of amides to direct C(sp3 )-H activation. The method enables direct C(sp3 )-H functionalization of a wide range of native amide substrates, including secondary, tertiary, and cyclic amides, for the first time. The utility of this process is demonstrated by diverse transformations of the olefination products.

SUBMITTER: Park H 

PROVIDER: S-EPMC6684442 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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Utilizing Carbonyl Coordination of Native Amides for Palladium-Catalyzed C(sp<sup>3</sup> )-H Olefination.

Park Hojoon H   Li Yang Y   Yu Jin-Quan JQ  

Angewandte Chemie (International ed. in English) 20190704 33


Pd<sup>II</sup> -catalyzed C(sp<sup>3</sup> )-H olefination of weakly coordinating native amides is reported. Three major drawbacks of previous C(sp<sup>3</sup> )-H olefination protocols, 1) in situ cyclization of products, 2) incompatibility with α-H-containing substrates, and 3) installation of exogenous directing groups, are addressed by harnessing the carbonyl coordination ability of amides to direct C(sp<sup>3</sup> )-H activation. The method enables direct C(sp<sup>3</sup> )-H functionaliz  ...[more]

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