Iodine-Promoted Deoxygenative Iodization/Olefination/Sulfenylation of Ketones with Sulfonyl Hydrazides: Access to β-Iodoalkenyl Sulfides.
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DOI: 10.1021/acs.orglett.8b00511
Abstract: A highly regio- and stereoselective synthesis of β-haloalkenyl sulfides using commercially available ketones and sulfonyl hydrazides as starting materials has been developed. This protocol obviates the need for alkynes and traditional sulfenylating agents and therefore… read more here.
Keywords: iodine promoted; ketones sulfonyl; sulfonyl hydrazides; promoted deoxygenative ... See more keywords
Iodine promoted iodosulfonylation of alkynes with sulfonyl hydrazides in an aqueous medium: highly stereoselective synthesis of (E)-β-iodo vinylsulfones
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DOI: 10.1039/c8nj01145a
Abstract: A catalyst-free and metal-free sulfonylation reaction for the preparation of (E)-β-iodo vinylsulfones from alkynes with sulfonyl hydrazides and molecular iodine was efficiently developed under mild and environmentally benign conditions, in water without any ligand or… read more here.
Keywords: promoted iodosulfonylation; iodine promoted; iodo vinylsulfones; sulfonyl hydrazides ... See more keywords
Iodine-promoted one-pot synthesis of 1,3,4-oxadiazole scaffolds via sp3 C–H functionalization of azaarenes
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DOI: 10.1039/c9nj03573g
Abstract: An efficient metal-free one-pot protocol has been developed for the construction of 1,3,4-oxadiazole derivatives via iodine-mediated oxidative amination of benzylic C–H bonds of azaarenes. read more here.
Keywords: pot; iodine promoted; pot synthesis; synthesis oxadiazole ... See more keywords
Iodine-promoted synthesis of pyrazoles from 1,3-dicarbonyl compounds and oxamic acid thiohydrazides
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DOI: 10.1039/d0qo00476f
Abstract: A novel approach to the synthesis of 3,4-dicarbonyl-substituted pyrazoles from a wide range of 1,3-dicarbonyl compounds and oxamic acid thiohydrazides was developed via iodine-promoted cascade imination/halogenation/cyclization/ring contraction reaction accompanied by sulfur elimination. This procedure provides… read more here.
Keywords: oxamic acid; acid thiohydrazides; iodine promoted; synthesis ... See more keywords
Iodine-promoted insertion of the oxygen atom from water in η4-vinylketene[Fe(CO)3] complexes.
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DOI: 10.1039/d2dt00674j
Abstract: Iodine promotes the in situ formation of iron(II) species from η4-vinylketene[Fe(CO)3] (3a-h) as a key intermediate for the synthesis of 2(5H)-furanones (4a-h) by a sequential water-insertion/carbon-oxygen coupling under mild reaction conditions. Compounds 4a-h were obtained… read more here.
Keywords: iodine promoted; water; insertion; insertion oxygen ... See more keywords
An iodine-promoted one-pot and metal-free access to indolin-2-ones
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DOI: 10.1177/1747519819875862
Abstract: A new method for the synthesis of indolin-2-ones has been realized by an I2-promoted oxidative reaction from 1,2,3,3-tetramethyl-3H-indolium iodides. This transformation proceeded smoothly under metal-free and peroxide-free conditions in a cascade manner. read more here.
Keywords: indolin ones; iodine promoted; promoted one; one pot ... See more keywords