Hydroxyl-Directed Ru(II)-Catalyzed Synthesis of Fused Dihydrofurans Using 1,4-Dioxane and Sulfoxonium Ylides as Annulating Agents.
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DOI: 10.1021/acs.orglett.2c04068
Abstract: An unprecedented annulation reaction is developed for the synthesis of dihydrofuran-fused compounds. In this Ru-catalyzed hydroxyl-group-directed reaction, easily affordable sulfoxonium ylides and 1,4-dioxane were used as the annulating partners. This is the first example of… read more here.
Keywords: directed catalyzed; dioxane; synthesis; hydroxyl directed ... See more keywords
Hydroxyl-Directed Rh(III)-Catalyzed C-H Functionalization: Access to Benzo[de]chromenes.
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DOI: 10.1021/acs.orglett.3c00095
Abstract: A cascade oxidative annulation reaction of heterocyclic ketene aminals (HKAs) with internal alkynes catalyzed by [Cp*RhCl2]2 and oxidized by Cu(OAc)2·H2O was developed to efficiently synthesize highly functionalized benzo[de]chromene derivatives in good to excellent yields. The… read more here.
Keywords: directed iii; hydroxyl directed; catalyzed functionalization; functionalization access ... See more keywords