Regio- and Stereoselective Additions of Diphenyldithiophosphinic Acid to N-(1-Alkynyl)amides and 1-Alkynyl Sulfides
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Treatment of <I>N</I>-(1-alkynyl)amides and 1-alkynyl sulfides with diphenyldithiophosphinic acid affords (<I>E</I>)-ketene <I>N</I>,<I>S</I>-acetals and <I>S</I>,<I>S</I>-acetals, respectively. The addition reactions proceed in <I>syn</I> fashions, which consist of protonation of the electron-rich alkynes and the following nucleophilic addition of diphenyldithiophosphinate anion to the resulting cationic intermediates.
- Bull. Chem. Soc. Jpn.
Bull. Chem. Soc. Jpn. 81(4), 506-514, 2008-04-15
The Chemical Society of Japan