Phosphine-Catalyzed Internal Redox [4 + 2] Annulation between 1,4-Enynoates and Electron-Deficient Alkenes.
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DOI: 10.1021/acs.orglett.1c03206
Abstract: Herein we describe a phosphine-catalyzed internal redox [4 + 2] annulation of 1,4-enynoates with electron-deficient alkenes, in which the γ- and φ-C(sp3)-H of the enynoates are formally oxidized for the annulation while the alkynyl moiety… read more here.
Keywords: phosphine catalyzed; annulation; annulation enynoates; internal redox ... See more keywords