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Pentafluorophenyl Esters: Highly Chemoselective Ketyl Precursors for the Synthesis of α,α-Dideuterio Alcohols Using SmI2 and D2O as a Deuterium Source

Hengzhao Li, Yuxia Hou, Chengwei Liu, Zemin Lai, Lei Ning, Roman Szostak, Michal Szostak* and Jie An*

*Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States; College of Science, China Agricultural University, Beijing 100193, China, Email:,

H. Li, Y. Hou, C. Liu, Z. Lai, L. Ning, R. Szostak, M. Szostak, J. An, Org. Lett., 2020, 22, 1249-1253.

DOI: 10.1021/acs.orglett.9b04383 (free Supporting Information)

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The use of pentafluorophenyl esters as ketyl radical precursors, SmI2 as a mild reducing agent, and D2O as the deuterium source enables a highly chemoselective synthesis of α,α-dideuterio alcohols with exquisite incorporation of deuterium. This system tolerates a variety of functional groups.

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Highly Chemoselective Reduction of Amides (Primary, Secondary, Tertiary) to Alcohols using SmI2/Amine/H2O under Mild Conditions

M. Szostak, M. Spain, A. J. Eberhard, D. J. Procter, J. Am. Chem. Soc., 2014, 136, 2268-2271.

Key Words

reduction of esters, samarium diiodide

ID: J54-Y2020