1,4-Addition of o-naphthoquinone methides induced by silver-catalyzed cyclization of enynones: an approach to unsymmetrical triarylmethanes and benzo[f]chromenes

Literature Information

Publication Date 2020-09-21
DOI 10.1039/D0QO00825G
Impact Factor 5.281
Authors

Feng Wu, Li Zhang


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Abstract

The 1,4-addition reaction of ortho-naphthoquinone methide (o-NQM) intermediates induced by silver-catalyzed ring formation with electron-rich aromatic compounds and α-methylene ketones has been developed. This reaction provides an efficient method to construct versatile unsymmetrical triarylmethanes and benzo[f]chromenes under mild conditions. This transient intermediate was inseparable due to reversible dimerization but could be stored by forming a boric acid adduct for further transformations.

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