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• W2950922521 endingPage "3409" @default.
• W2950922521 startingPage "3403" @default.
• W2950922521 abstract "We developed a novel synthetic method for allenyl spiro[4.5]cyclohexadienone derivatives based on a base-promoted intramolecular ipso-Friedel–Crafts addition of phenols to propargyl bromides. The present spirocyclization proceeded in a CH2Cl2–tert-BuOH mixed solvent system using potassium tert-butoxide as the base, and produced the corresponding spiro[4.5]cyclohexadienone derivatives with an allene motif in up to 99% yield. This-type allenyl spirocycle was also accessible through Pd-catalyzed intramolecular ipso-Friedel–Crafts alkylation when a propargyl carbonate derivative with a naphthol unit was used as a substrate. Acid-promoted skeletal rearrangement of the reaction adducts was also examined." @default.
• W2950922521 created "2019-06-27" @default.
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• W2950922521 date "2013-04-01" @default.
• W2950922521 modified "2023-09-25" @default.
• W2950922521 title "Synthesis of spiro[4.5]cyclohexadienones with an allene motif via a base-promoted intramolecular ipso-Friedel–Crafts addition of phenols to propargyl bromides" @default.
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• W2950922521 doi "https://doi.org/10.1016/j.tet.2013.02.082" @default.
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