期刊
ORGANIC LETTERS
卷 23, 期 16, 页码 6553-6557出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.1c02364
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This study presents a new method for the palladium-/copper-cocatalyzed three-component trans-allenylsilylation of terminal alkynes with propargyl acetates and PhMe(2)SiBpin, providing a highly chemoselective, regioselective, and stereoselective alkyne difunctionalization route to the synthesis of valuable (E)-silyl enallenes. The utility of this method is demonstrated through late-stage derivatization of bioactive compounds.
A palladium-/copper-cocatalyzed three-component trans-allenylsilylation of terminal alkynes with propargyl acetates and PhMe(2)SiBpin is described, which is driven by the regioselective allenylation of the alkyne with propargyl acetates and then silylation. This method allows the simultaneous incorporation of an allene and silicon across the C C bond and provides a highly chemo-, regio-, and stereoselective alkyne difunctionalization route to the synthesis of valuable (E)-silyl enallenes. The utility of this method is highlighted by late-stage derivatization of bioactive compounds.
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