Brønsted Base Mediated Stereoselective Diphosphination of Terminal Alkynes with Diphosphanes
Yuto Okugawa, Koji Hirano* and Masahiro Miura*
*Department of Applied Chemistry, Graduate School of
Engineering, Osaka University, Suita, Osaka 565-0871, Japan, Email: k_hirano
chem.eng.osaka-u.ac.jp,
miurachem.eng.osaka-u.ac.jp
Y. Okugawa, K. Hirano, M. Miura, Org. Lett., 2017, 19, 2973-2976.
DOI: 10.1021/acs.orglett.7b01209
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Abstract
A catalytic amount of a Brønsted base mediates a stereoselective diphosphination of terminal alkynes with diphosphanes to deliver the corresponding (E)-1,2-diphosphinoethenes in good yields. This reaction offers a good alternative to precedented transition-metal-catalyzed or radical-promoted approaches to the 1,2-diphosphinoethene framework of potent interest in catalysis and coordination chemistry.
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proposed mechanism
Key Words
ID: J54-Y2017
