Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Hiroaki Kurouchi"'
Autor:
Hiroaki Kurouchi
Publikováno v:
Organic & Biomolecular Chemistry. 19:653-658
A route to the direct amidation of aromatic-ring-tethered N-carbamoyl tetrahydroisoquinoline substrates was developed. This route enabled general access to 8-oxoberberines and their 5- and 7- membered C-ring homologues. It overcomes the undesired tan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b547ea94f9ce8ec8e4dad89ba71b8832
https://doi.org/10.1039/d0ob02096f
https://doi.org/10.1039/d0ob02096f
Autor:
Masahiro Sai, Hiroaki Kurouchi
Publikováno v:
Advanced Synthesis & Catalysis.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::720b5fa9eb63eca4b22b5f11ecdbcfa6
https://doi.org/10.1002/adsc.202100272
https://doi.org/10.1002/adsc.202100272
Autor:
Hiroaki Kurouchi
Publikováno v:
Chemical communications (Cambridge, England). 56(59)
Superacid-promoted conversion of tetrahydroisoquinolines to triarylmethanes via tandem reactions of C-N bond scission, Friedel-Crafts alkylation, C-O bond scission, and electrophilic aromatic amidation was developed. Dication formation was important
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ee0c8406fa554c317e73706484aa185
https://pubmed.ncbi.nlm.nih.gov/32573605
https://pubmed.ncbi.nlm.nih.gov/32573605
Publikováno v:
Synlett. 33:589-583
Spirocyclic 3,5-difluorocyclohexa-2,5-dienones possessing a triisopropylsiloxy-containing cyclic ether appendage were synthesized by oxidative dearomatization of the corresponding phenols. By group selectivity in the nucleophilic 1,4-addition/elimina
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0506d759d248f0f3375ccb7c7d88219
https://doi.org/10.1055/s-0041-1737334
https://doi.org/10.1055/s-0041-1737334
Autor:
Tomohiko Ohwada, Hiroaki Kurouchi
Publikováno v:
The Journal of organic chemistry. 85(2)
Benzolactams with medium-sized rings were synthesized via the electrophilic aromatic substitution reaction of carbamoyl cations (R1R2N+═C═O) in good to high yields without dilution. These reactions were utilized to quantitatively examine the exte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1997a24173bb1694f652889cc4568da3
https://pubmed.ncbi.nlm.nih.gov/31800245
https://pubmed.ncbi.nlm.nih.gov/31800245
Autor:
Hiroaki Kurouchi, Daniel A. Singleton
Publikováno v:
Nature Chemistry. 10:237-241
Any long-lived chemical structure in solution is subject to statistical energy equilibration, so the history of any specific structure does not affect its subsequent reactions. This is not true for very short-lived intermediates because energy equili
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2b8cdf3a388ab42aa812eb728b6874f
https://doi.org/10.1038/nchem.2907
https://doi.org/10.1038/nchem.2907
Publikováno v:
Journal of the American Chemical Society. 138:14534-14537
The comparison of experimental and predicted kinetic isotope effects in the α-cleavage of alkoxy radicals is used here to judge the applicability of statistical rate theories. It is found that the governing rate theory and the statistical versus non
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29fff8612399e00d48cde3382a71e4c9
https://doi.org/10.1021/jacs.6b09052
https://doi.org/10.1021/jacs.6b09052
Publikováno v:
Chemistry - A European Journal. 22:11196-11200
Kinetics of activation of methyl and benzyl metallocene precatalysts by benzhydrylium ions, tritylium ions, and triarylborane B(C6 F5 )3 were measured spectrophotometrically. The rate constants correlate linearly with the electrophilicity parameter E
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9b9ee6b7c18e19758f94f7855f9136b
https://doi.org/10.1002/chem.201602452
https://doi.org/10.1002/chem.201602452
Publikováno v:
Chemistry - An Asian Journal. 9:2995-3004
Carbamates have been used as precursors of isocyanates, but heating in the presence of strong acids is required because cleavage of the C-O bond in carbamates is energy-demanding even in acid media. Direct amidation of aromatic compounds by isocyanat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::279fa12feac559575b392ded0d2f0b6c
https://doi.org/10.1002/asia.201402625
https://doi.org/10.1002/asia.201402625
Autor:
Yuko Otani, Hiroaki Kurouchi, Tomohiko Ohwada, Kyoko Kawamoto, Hiromichi Sugimoto, Satoshi Nakamura
Publikováno v:
The Journal of Organic Chemistry. 77:9313-9328
Although cations with three heteroatoms, such as monoprotonated guanidine and urea, are stabilized by Y-shaped conjugation and such Y-conjugated cations are sufficiently basic to be further protonated (or protosolvated) to dications in strongly acid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55bf33c1978e4b21415b212bbae9bc50
https://doi.org/10.1021/jo3020566
https://doi.org/10.1021/jo3020566