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Synlett 2014; 25(10): 1419-1424
DOI: 10.1055/s-0033-1339004
DOI: 10.1055/s-0033-1339004
letter
Copper-Catalyzed Diarylation of Activated Alkenes with Diaryliodonium Salts
Further Information
Publication History
Received: 24 February 2014
Accepted after revision: 07 April 2014
Publication Date:
19 May 2014 (online)
Abstract
Cu(OTf)2-catalyzed diarylation of activated alkenes by using diaryliodonium(III) salts has been developed. With this method, arylated oxindoles can be easily accessed in good yields. Insights into the mechanism of copper-catalyzed arylations are discussed, and the findings are expected to help increase the level of understanding of catalytic arylations with diaryliodonium salts.
Supporting Information
- for this article is available online at http://www.thieme-connect.com/products/ejournals/journal/ 10.1055/s-00000083.
- Supporting Information
-
References and Notes
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- 14 Cascade Reaction of N-Arylacrylamide with Diaryliodonium Salts; General Procedure: Cu(OTf)2 (0.05 mmol, 0.1 equiv), N-arylacrylamide (0.5 mmol, 1.0 equiv) and diphenyliodonium salt (1.0 mmol, 2.0 equiv) were added to a dried Schlenk tube. The tube was degassed with nitrogen three times, then DCE (2.0 mL) was added by using a syringe. The mixture was heated and stirred at 130 °C for 16 h, then cooled to r.t. and the solvent was evaporated in vacuum. The crude products were directly purified by flash column chromatography on silica gel (petroleum ether–EtOAc, 10:1) to afford the desired oxindole.
For examples involving the CF3 group, see:
For examples involving the N3 group, see:
For examples involving the halogen group, see:
For examples involving the carbonyl group, see:
For examples involving the NO2 group, see:
For examples involving sp3-CH groups, see: