Noriko Okamoto

Bio: Noriko Okamoto is an academic researcher from International University, Cambodia. The author has contributed to research in topics: Triple bond & Nucleophilic addition. The author has an hindex of 7, co-authored 15 publications receiving 260 citations. Previous affiliations of Noriko Okamoto include Hiroshima University.

Regio- and stereoselective multisubstituted enol ester synthesis.

Abstract: Regio- and stereoselective cohalogenation of alkynes with NXS (X = Br, I) was achieved, and the stereoselectivity of the resulting alkenes was dependent on the substituent on the alkyne. Cohalogenation and successive cross-coupling gave multisubstituted enol esters in a one-pot process.

Multisubstituted furan formation from (Z)- or (E)-enynyl acetates: tandem reactions accelerated by electron-donating groups on aromatic rings.

Abstract: Multisubstituted furans were readily prepared from (Z)- or (E)-conjugated enynyl acetates with NXS under metal-free conditions at room temperature via the same haloallenyl ketone intermediates. This tandem haloallenyl ketone formation–furan formation reaction sequence was accelerated by electron-donating groups on the aromatic rings.

Advances in Synthetic Applications of Hypervalent Iodine Compounds

Abstract: The preparation, structure, and chemistry of hypervalent iodine compounds are reviewed with emphasis on their synthetic application. Compounds of iodine possess reactivity similar to that of transition metals, but have the advantage of environmental sustainability and efficient utilization of natural resources. These compounds are widely used in organic synthesis as selective oxidants and environmentally friendly reagents. Synthetic uses of hypervalent iodine reagents in halogenation reactions, various oxidations, rearrangements, aminations, C–C bond-forming reactions, and transition metal-catalyzed reactions are summarized and discussed. Recent discovery of hypervalent catalytic systems and recyclable reagents, and the development of new enantioselective reactions using chiral hypervalent iodine compounds represent a particularly important achievement in the field of hypervalent iodine chemistry. One of the goals of this Review is to attract the attention of the scientific community as to the benefits of...