Zobrazeno 1 - 10 of 78 pro vyhledávání: '"Kazunori Nagao"'
1
Akademický článek
Synthesis of tertiary alkylphosphonate oligonucleotides through light-driven radical-polar crossover reactions
Autor: Kenji Ota, Kazunori Nagao, Dai Hata, Haruki Sugiyama, Yasutomo Segawa, Ryosuke Tokunoh, Tomohiro Seki, Naoya Miyamoto, Yusuke Sasaki, Hirohisa Ohmiya
Publikováno v: Nature Communications, Vol 14, Iss 1, Pp 1-9 (2023)
Abstract Chemical modification of nucleotides can improve the metabolic stability and target specificity of oligonucleotide therapeutics, and alkylphosphonates have been employed as charge-neutral replacements for naturally-occurring phosphodiester b
Externí odkaz: https://doaj.org/article/1f49951f219d47978c13c5c914215477
Zobrazit plný text záznamu
2
Akademický článek
Organophotoredox-catalyzed semipinacol rearrangement via radical-polar crossover
Autor: Taiga Kodo, Kazunori Nagao, Hirohisa Ohmiya
Publikováno v: Nature Communications, Vol 13, Iss 1, Pp 1-7 (2022)
Although electrochemical semipinacol rearrangements have been reported, a complementary photochemical route has yet to be developed. Here the authors report an organophotoredox-catalyzed semipinacol rearrangement via radical-polar crossover.
Externí odkaz: https://doaj.org/article/0e56a20c12094e7ba9c5b75ea389e772
Zobrazit plný text záznamu
3
Akademický článek
Aryl radical-mediated N-heterocyclic carbene catalysis
Autor: Yuki Matsuki, Nagisa Ohnishi, Yuki Kakeno, Shunsuke Takemoto, Takuya Ishii, Kazunori Nagao, Hirohisa Ohmiya
Publikováno v: Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021)
Use of aryl halides as coupling precursors typically occurs through transition metal catalysis and/or photoredox chemistry, which requires some combination of light, metals, and oxidants or reductants. Here, the authors show a method to generate aryl
Externí odkaz: https://doaj.org/article/f36b6c5bc0004213ae418b24ec57fb2a
Zobrazit plný text záznamu
4
Akademický článek
Allylic cross-coupling using aromatic aldehydes as α-alkoxyalkyl anions
Autor: Akihiro Yuasa, Kazunori Nagao, Hirohisa Ohmiya
Publikováno v: Beilstein Journal of Organic Chemistry, Vol 16, Iss 1, Pp 185-189 (2020)
The allylic cross-coupling using aromatic aldehydes as α-alkoxyalkyl anions is described. The synergistic palladium/copper-catalyzed reaction of aromatic aldehydes, allylic carbonates, and a silylboronate produces the corresponding homoallylic alcoh
Externí odkaz: https://doaj.org/article/0e49de485ed143e8be821545e81f2ca4
Zobrazit plný text záznamu
5
Akademický článek
Copper-catalyzed stereoselective conjugate addition of alkylboranes to alkynoates
Autor: Takamichi Wakamatsu, Kazunori Nagao, Hirohisa Ohmiya, Masaya Sawamura
Publikováno v: Beilstein Journal of Organic Chemistry, Vol 11, Iss 1, Pp 2444-2450 (2015)
A copper-catalyzed conjugate addition of alkylboron compounds (alkyl-9-BBN, prepared by hydroboration of alkenes with 9-BBN-H) to alkynoates to form β-disubstituted acrylates is reported. The addition occurred in a formal syn-hydroalkylation mode. T
Externí odkaz: https://doaj.org/article/6748c8dec1ca4b3c90585b4b8dccb952
Zobrazit plný text záznamu
9
Radical Relay Trichloromethylacylation of Alkenes through N-Heterocyclic Carbene Catalysis
Autor: Kazunori Nagao, Hirohisa Ohmiya, Mayu Kusakabe
Publikováno v: Organic Letters. 23:7242-7247
N-Heterocyclic carbene catalysis enabling vicinal trichloromethylacylation of alkenes using tetrachloromethane and aldehydes has been developed. The reaction involves single electron transfer from the enolate form of the Breslow intermediate to tetra
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cfd1cf164aa64c7d5ac4450f9e66ba22
https://doi.org/10.1021/acs.orglett.1c02639
Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání

Omezení vyhledávání
Plný text Recenzováno Digitální knihovna AV ČR
Zdroje