Phosphine-Catalyzed Domino β/γ-Additions of Benzofuranones with Allenoates: A Method for Unsymmetrical 3,3-Disubstituted Benzofuranones.
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DOI: 10.1021/acs.orglett.7b01482
Abstract: A phosphine-catalyzed domino process of benzofuranones with allenoates has been developed which furnishes highly functionalized unsymmetrical 3,3-disubstituted benzofuranones in synthetically useful yields. The mechanism for the transformation is a tandem β-umpolung/γ-umpolung process. read more here.
Keywords: phosphine catalyzed; unsymmetrical disubstituted; catalyzed domino; disubstituted benzofuranones ... See more keywords