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

Hem Raj Khatri , Hai Nguyen , James K. Dunaway , Jianglong Zhu

Front. Chem. Sci. Eng. ›› 2015, Vol. 9 ›› Issue (3) : 359 -368.

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Front. Chem. Sci. Eng. ›› 2015, Vol. 9 ›› Issue (3) : 359 -368. DOI: 10.1007/s11705-015-1530-6
RESEARCH ARTICLE
RESEARCH ARTICLE

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

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Abstract

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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Keywords

hypervalent iodine / allylation / fluoroalcohol / Claisen rearrangement / heterocycles

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Hem Raj Khatri, Hai Nguyen, James K. Dunaway, Jianglong Zhu. Fluoroalcohol-mediated reductive iodonio-Claisen rearrangement: Synthesis of complex ortho-substituted-allyl iodoarenesŽ . Front. Chem. Sci. Eng., 2015, 9(3): 359-368 DOI:10.1007/s11705-015-1530-6

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