Transition-Metal-Free, Selective Reductive Deuteration of Terminal Alkynes with Sodium Dispersions and EtOD-d1
- 7 May 2018
- journal article
- research article
- Published by American Chemical Society (ACS) in Organic Letters
- Vol. 20 (10), 3010-3013
- https://doi.org/10.1021/acs.orglett.8b01036
Abstract
A transition-metal-free single electron transfer reaction has been developed for the synthesis of [D3]-alkenes from terminal alkynes using sodium dispersions as the electron donor and EtOD-d1 as the deuterium source. Both reagents are cost-effective and bench-stable. This practical method exhibits remarkable terminal alkyne selectivity and exclusive alkene selectivity. Excellent deuterium incorporations and yields were achieved across a broad range of terminal alkynes without olefin isomerization. Of note, this reaction is highly solvent dependent. n-Hexane provides unique enhancement to this reductive deuteration process.Keywords
Funding Information
- Ministry of Science and Technology of the People's Republic of China (2017YFD0200504)
- National Natural Science Foundation of China (21711530213, 21602248)
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