Abstract

AbstractA method for the rearrangement of alkyne-tethered cyclohexadienone to furnish meta-enone-substituted anisoles using arene diazonium tetrafluoroborate salts as precatalyst was developed. The reaction proceeds via intramolecular 1,6-enyne cyclization-aromatization and oxetene ring opening. The same protocol was also employed to obtain phthalide-substituted anisoles. The reactions are atom economic, have a broad substrate scope and amenable to gram-scale synthesis. Further synthetic transformations of the products were also performed.

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