Volume 53, Issue 37 pp. 9817-9821
Communication

Chemoselective Carbophilic Addition of α-Diazoesters through Ligand-Controlled Gold Catalysis

Yumeng Xi

Yumeng Xi

C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506 (USA) http://community.wvu.edu/∼xs007/

These authors contributed equally to this work.

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Yijin Su

Yijin Su

C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506 (USA) http://community.wvu.edu/∼xs007/

These authors contributed equally to this work.

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Zhaoyuan Yu

Zhaoyuan Yu

School of Chemistry and Chemical Engineering, Chongqing University, 400030, Chongqing (P.R. China)

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Boliang Dong

Boliang Dong

C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506 (USA) http://community.wvu.edu/∼xs007/

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Edward J. McClain

Edward J. McClain

C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506 (USA) http://community.wvu.edu/∼xs007/

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Prof. Yu Lan

Corresponding Author

Prof. Yu Lan

School of Chemistry and Chemical Engineering, Chongqing University, 400030, Chongqing (P.R. China)

Yu Lan, School of Chemistry and Chemical Engineering, Chongqing University, 400030, Chongqing (P.R. China)

Xiaodong Shi, C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506 (USA) http://community.wvu.edu/∼xs007/

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Prof. Xiaodong Shi

Corresponding Author

Prof. Xiaodong Shi

C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506 (USA) http://community.wvu.edu/∼xs007/

Yu Lan, School of Chemistry and Chemical Engineering, Chongqing University, 400030, Chongqing (P.R. China)

Xiaodong Shi, C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, WV 26506 (USA) http://community.wvu.edu/∼xs007/

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First published: 23 July 2014
Citations: 270

We are grateful to the NSF (CAREER-CHE-0844602 and CHE-1228336) and the NSFC (No. 21228204) for financial support. Y.L. acknowledges support from the National Science Foundation of China (No. 21372266 and 51302327).

Graphical Abstract

Carbocation or carbene? The chemoselective addition of arenes and 1,3-diketones to α-aryldiazoesters was achieved through ligand-controlled gold catalysis. The gold catalyst with electron-deficient phosphite as the ancillary ligand exclusively gave the carbophilic addition products, thus representing a new and efficient approach to form “carbophilic carbocations”, which selectively react with carbon nucleophiles.

Abstract

The chemoselective addition of arenes and 1,3-diketones to α-aryldiazoesters was achieved through ligand-controlled gold catalysis. Unlike a dirhodium catalyst (which promotes Curn:x-wiley:14337851:media:ANIE201404946:tex2gif-inf-1H insertion and cyclopropanation) and a copper catalyst (which catalyzes OH and NH insertions), the gold catalyst with an electron-deficient phosphite as the ancillary ligand exclusively gave the carbophilic addition product, thus representing a new and efficient approach to form “carbophilic carbocations”, which selectively react with carbon nucleophiles.

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