Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Shigenobu Umemiya"'
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 20, Iss 1, Pp 1973-1980 (2024)
A flow photochemical reaction system for a π-Lewis acidic metal-catalyzed cyclization/radical addition sequence was developed, which utilizes in situ-generated 2-benzopyrylium intermediates as the photoredox catalyst and electrophilic substrates. Th
Externí odkaz:
https://doaj.org/article/d87d24c69c89445e91ed620e71160e81
Publikováno v:
Organic Letters. 25:1924-1928
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9bd5657ea3faa7807341ec1fd660318f
https://doi.org/10.1021/acs.orglett.3c00450
https://doi.org/10.1021/acs.orglett.3c00450
Publikováno v:
Chemistry Letters. 51:391-394
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f5c528b09c564e6421177c02be28d20
https://doi.org/10.1246/cl.210803
https://doi.org/10.1246/cl.210803
Publikováno v:
Chemical Science. 13:9607-9613
A highly efficient KR of racemic tertiary allylic alcohols was developed through the intramolecular SN2′ reaction using the chiral bisphosphoric acid/silver carbonate co-catalyst system, affording cis-epoxides and recovered alcohols in a high s-fac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67518d7b243863067a8feb8bb1f13734
https://doi.org/10.1039/d2sc03052g
https://doi.org/10.1039/d2sc03052g
Autor:
Masahiro Terada, Shigenobu Umemiya
Publikováno v:
Organic Letters. 23:3767-3771
An enantioselective allylation of silyl-substituted acetylenic aldehydes by chiral phosphoric acid (CPA)/transition metal cooperative catalysis was developed. Enantioenriched homoallylic propargyl alcohols were obtained in good yields with excellent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c2aea34dfa7497c7ae4b0ed158cf6be
https://doi.org/10.1021/acs.orglett.1c01166
https://doi.org/10.1021/acs.orglett.1c01166
Publikováno v:
Chemistry – A European Journal. 26:11124-11128
Despite the significant progress of the enantioselective reaction using chiral catalysts, the enantioselective nucleophilic substitution reaction at the chiral sp3 -hybridized carbon atom of a racemic electrophile has not been largely explored. Herei
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e7d3bb0c6f1ab4bc472a4acb8e5427b
https://doi.org/10.1002/chem.202001609
https://doi.org/10.1002/chem.202001609
Autor:
Satavisha Kayal, Jun Kikuchi, Masahiro Shimizu, Naoya Shinagawa, Shigenobu Umemiya, Masahiro Terada
Publikováno v:
ACS Catalysis. 11:8956-8957
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09432c6060e3754c68708827447ec2d4
https://doi.org/10.1021/acscatal.1c02714
https://doi.org/10.1021/acscatal.1c02714
Autor:
Bheema Rao Paraselli, Ravi Kumar Puthukanoori, Hugh Nakamura, Gopi Krishna Gaddamanugu, Yuzuru Kanda, Phil S. Baran, Venkata Ramana Murthy Appala, Shigenobu Umemiya
Publikováno v:
J Am Chem Soc
Taxol® is widely regarded as amongst the most famed natural isolates ever discovered, and has been the subject of innumerable studies in both basic and applied science. Its documented success as an anticancer agent, coupled with early concerns over
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25749311123d302409cab77f047b6432
https://pubmed.ncbi.nlm.nih.gov/32406238
https://pubmed.ncbi.nlm.nih.gov/32406238
Autor:
Keiichi Ishida, Eunsang Kwon, Akira Takikawa, Tohru Taniguchi, Shigenobu Umemiya, Kenji Monde, Seitaro Koshino, Yujiro Hayashi
Publikováno v:
Chemistry (Weinheim an der Bergstrasse, Germany). 26(20)
The pot-economical, highly enantioselective synthesis of axially chiral biaryls was developed by using one-pot organocatalyst-mediated domino and aromatization reactions as key steps. The axial information of the precursor, which also has central chi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c53297361af68b6b57b5a0bf368e116
https://pubmed.ncbi.nlm.nih.gov/32250025
https://pubmed.ncbi.nlm.nih.gov/32250025
Publikováno v:
European Journal of Organic Chemistry. 2019:678-681
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fac4858b97ed4e0576a2f9df3391d12
https://doi.org/10.1002/ejoc.201801202
https://doi.org/10.1002/ejoc.201801202