Cobalt(diamine)-catalyzed cross-coupling reaction of alkyl halides with arylmagnesium reagents: stereoselective constructions of arylated asymmetric carbons and application to total synthesis of…
- H. Ohmiya, H. Yorimitsu, K. Oshima
- ChemistryJournal of the American Chemical Society
- 20 January 2006
A sequential radical cyclization/arylation reaction under cobalt catalysis provides extremely short access to a synthetic prostaglandin AH13205 and it is confirmed that oxidative addition of alkyl halide to cobalt proceeds via a radical process.
Regio- and stereocontrolled introduction of secondary alkyl groups to electron-deficient arenes through copper-catalyzed allylic alkylation.
- Y. Makida, H. Ohmiya, M. Sawamura
- Chemistry, BiologyAngewandte Chemie
- 23 April 2012
In the title reaction allylic substrates with a carbonate or acetate leaving group instead of the phosphate group are not reactive.
Cobalt-catalyzed cross-coupling reactions of alkyl halides with aryl Grignard reagents and their application to sequential radical cyclization/cross-coupling reactions
- H. Ohmiya, K. Wakabayashi, H. Yorimitsu, K. Oshima
- Chemistry
- 6 March 2006
Cu(I)-catalyzed intramolecular hydroamination of unactivated alkenes bearing a primary or secondary amino group in alcoholic solvents.
- H. Ohmiya, T. Moriya, M. Sawamura
- ChemistryOrganic Letters
- 20 April 2009
The Cu-Xantphos system catalyzes the intramolecular hydroamination of unactivated terminal alkenes bearing an unprotected aminoalkyl substituent in alcoholic solvents, giving pyrrolidine and piperidine derivatives in excellent yields.
Copper(I)-catalyzed intramolecular hydroalkoxylation of unactivated alkenes.
- Hiroaki Murayama, K. Nagao, H. Ohmiya, M. Sawamura
- ChemistryOrganic Letters
- 7 April 2015
A Cu(I)-Xantphos system catalyzed the intramolecular hydroalkoxylation of unactivated terminal alkenes, giving five- and six-membered ring ethers. This system is applicable to both primary and…
Palladium‐Catalyzed γ‐Selective and Stereospecific Allyl—Aryl Coupling Between Allylic Acetates and Arylboronic Acids.
- H. Ohmiya, Y. Makida, Dong Li, M. Tanabe, M. Sawamura
- Chemistry
- 19 May 2009
Hydrogenation of Hindered Ketones Catalyzed by a Silica-Supported Compact Phosphine—Rh System.
- Soichiro Kawamorita, G. Hamasaka, H. Ohmiya, K. Hara, A. Fukuoka, M. Sawamura
- Chemistry
- 10 March 2009
Directed ortho borylation of functionalized arenes catalyzed by a silica-supported compact phosphine-iridium system.
- Soichiro Kawamorita, H. Ohmiya, K. Hara, A. Fukuoka, M. Sawamura
- ChemistryJournal of the American Chemical Society
- 24 March 2009
An immobilized monophosphine-Ir system, which was prepared in situ from [Ir(OMe)(cod)](2) and a silica-supported, compact phosphine, showed high activities and selectivities for the borylation of…
N-Heterocyclic Carbene-Catalyzed Decarboxylative Alkylation of Aldehydes.
- T. Ishii, Yuki Kakeno, K. Nagao, H. Ohmiya
- ChemistryJournal of the American Chemical Society
- 20 February 2019
We found that N-heterocyclic carbene catalysis promoted the unprecedented decarboxylative coupling of aryl aldehydes and tertiary or secondary alkyl carboxylic acid-derived redox-active esters to…
N-Heterocyclic Carbene-Based Catalysis Enabling Cross-Coupling Reactions
- H. Ohmiya
- ChemistryACS Catalysis
- 8 June 2020
N-Heterocyclic carbene (NHC) organocatalysis to promote so-called umpolung reactions has emerged as a powerful tool for modern organic synthesis. NHC-bound nucleophiles known as Breslow intermediat...
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