Fluoroalcohol-mediated reductive iodonio-Claisen rearrangement: Synthesis of complex ortho-substituted-allyl iodoarenes

Springer Science and Business Media LLC - Tập 9 - Trang 359-368 - 2015
Hem Raj Khatri1, Hai Nguyen1, James K. Dunaway1, Jianglong Zhu1
1Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, Toledo, USA

Tóm tắt

Reductive iodonio-Claisen rearrangement (RICR) involving λ3-iodanes and allyl or substituted-allyl silanes in fluoroalcohols, such as 1,1,1,3,3,3-hexafluoroisopropanol (HFIP) and 2,2,2-trifluoroethanol (TFE), was studied for the synthesis of complex ortho-allyl or substituted-allyl iodoarenes. In comparison to the previously reported condition involving boron trifluoride diethyl etherate, the RICR mediated by fluoroalcohols was found to proceed more effectively. The resulting complex ortho-allyl iodoarenes are useful synthetic intermediates and can be readily converted to various heterocyclic compounds.

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