Abstract
Efficient electrophilic metalation of aromatic C–H bonds leading to new C–C bond formation through regio- and stereoselective addition to alkynes and alkenes has been realized by a catalytic amount (0.02 to 5 mole percent) of palladium(II) or platinum(II) compounds in a mixed solvent containing trifluoroacetic acid at room temperature. Various arenes undergo unexpected selective trans hydroarylation to terminal or internal C≡C bonds inter- and intramolecularly with high efficiency (up to a turnover number of 4500 for palladium), especially for electron-rich arenes, giving thermodynamically unfavorablecis-alkenes, and the oxygen- and nitrogen-containing heterocycles. The simplicity, generality, and efficiency of this process should be very attractive to the possible industrial application for the functionalization of arenes.
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Dates
Type | When |
---|---|
Created | 23 years ago (July 27, 2002, 5:40 a.m.) |
Deposited | 8 months, 2 weeks ago (Dec. 8, 2024, 1:01 p.m.) |
Indexed | 3 weeks ago (Aug. 2, 2025, 12:50 a.m.) |
Issued | 25 years, 5 months ago (March 17, 2000) |
Published | 25 years, 5 months ago (March 17, 2000) |
Published Print | 25 years, 5 months ago (March 17, 2000) |
@article{Jia_2000, title={Efficient Activation of Aromatic C-H Bonds for Addition to C-C Multiple Bonds}, volume={287}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.287.5460.1992}, DOI={10.1126/science.287.5460.1992}, number={5460}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Jia, Chengguo and Piao, Dongguo and Oyamada, Juzo and Lu, Wenjun and Kitamura, Tsugio and Fujiwara, Yuzo}, year={2000}, month=mar, pages={1992–1995} }