Literature DB >> 29481072

Ligand-Enabled γ-C(sp3)-H Activation of Ketones.

Ru-Yi Zhu1, Zi-Qi Li1, Han Seul Park1, Chris H Senanayake2, Jin-Quan Yu1.   

Abstract

We report the first example of Pd(II)-catalyzed γ-C(sp3)-H activation of ketones directed by a practical 2,2-dimethyl aminooxyacetic acid auxiliary. 2-Pyridone ligands are identified to enable C(sp3)-H activation for the first time. A rare six-membered palladacycle intermediate is isolated and characterized to elucidate the reaction mechanism. Both (hetero)arylation and vinylation of γ-C(sp3)-H bonds are demonstrated. Sequential β- and γ-C(sp3)-H (hetero)arylation of muscone showcases the utility of this method for late-stage diversification. A convenient Mn(II)-catalyzed auxiliary removal is also developed to further underscore the practicality of this transformation.

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Year:  2018        PMID: 29481072      PMCID: PMC5851877          DOI: 10.1021/jacs.8b01359

Source DB:  PubMed          Journal:  J Am Chem Soc        ISSN: 0002-7863            Impact factor:   15.419


  33 in total

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Journal:  J Am Chem Soc       Date:  2017-08-29       Impact factor: 15.419

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  19 in total

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7.  Rational Development of Remote C-H Functionalization of Biphenyl: Experimental and Computational Studies.

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