Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Tomoyuki Nozaki"'
Autor:
Kiyosei Takasu, Tetsuhiro Nemoto, Yasumasa Hamada, Yoshinori Hashimoto, Shingo Harada, Yusuke Kuroda, Harald Gröger, Ken-ichi Yamada, Masato Kono, Shun-ichi Murata, Tomoyuki Nozaki
Publikováno v:
Organic Letters. 21:3750-3754
Although (+)-catharanthine is an attractive alkaloid for both clinical research and organic synthetic chemistry, only a limited number of approaches for its catalytic asymmetric synthesis exist. Herein, we describe a novel strategy for synthesizing a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d716c0cd079597d1370f40bb192a3896
https://doi.org/10.1021/acs.orglett.9b01198
https://doi.org/10.1021/acs.orglett.9b01198
Publikováno v:
Tetrahedron. 69:9609-9615
Formal meta-specific intramolecular Friedel–Crafts allylic alkylation of phenols was achieved based on spirocyclization–dienone–phenol rearrangement cascades. Systematic screening of acid catalysts revealed that Sc(OTf)3 was a highly effective
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::387927456c0582e30c20e67a288d133a
https://doi.org/10.1016/j.tet.2013.09.042
https://doi.org/10.1016/j.tet.2013.09.042
Publikováno v:
Advanced Synthesis & Catalysis. 355:2693-2700
A novel and efficient synthetic method for functionalized spiro[4.5]cyclohexadienones was developed based on the palladium-catalyzed sequential process: Heck insertion to an allene–intramolecular ipso-Friedel–Crafts allylic alkylation cascade. Us
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::30db58c2ba2e0429c17305d4388ec844
https://doi.org/10.1002/adsc.201300326
https://doi.org/10.1002/adsc.201300326
Autor:
Masato Kono, Shingo Harada, Tomoyuki Nozaki, Yasumasa Hamada, Tetsuhiro Nemoto, Yasuhiro Menjo
Publikováno v:
ChemInform. 47
The Rh-catalyzed formal carbenoid insertion into an amide C—N bond delivers azabicyclo[X.Y.Z.]alkane derivatives in good to high yields and proceeds via the formation of Rh-associated N-ylides, followed by an acyl group-selective Stevens [1,2]-shif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc9c8ba5087037731743f182323d53d4
https://doi.org/10.1002/chin.201609127
https://doi.org/10.1002/chin.201609127
Autor:
Masato Kono, Yasumasa Hamada, Shingo Harada, Yasuhiro Menjo, Tetsuhiro Nemoto, Tomoyuki Nozaki
Publikováno v:
The Journal of organic chemistry. 80(20)
Various nitrogen-bridged bicyclic skeletons are found in bioactive natural products and pharmaceuticals. The development of a new reaction to construct these molecular frameworks has attracted considerable attention in synthetic organic chemistry. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a929f746b1d5854f1fc8220952bc307
https://pubmed.ncbi.nlm.nih.gov/26400763
https://pubmed.ncbi.nlm.nih.gov/26400763
Autor:
Masato Kono, Shingo Harada, Tomoyuki Nozaki, Yoshinori Hashimoto, Shun-ichi Murata, Gröger, Harald, Yusuke Kuroda, Ken-ichi Yamada, Kiyosei Takasu, Yasumasa Hamada, Tetsuhiro Nemoto
Publikováno v:
Organic Letters; May2019, Vol. 21 Issue 10, p3750-3754, 5p
Publikováno v:
ChemInform. 45
A novel Pd-catalyzed Heck insertion to an allene followed by an intramolecular ipso-Friedel—Crafts allylic alkylation cascade is described to convert functionalized phenols (I) and (IV) to spiro[4.5]cyclohexadienones.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd0fa89496b49108882cc43bcd21f9bd
https://doi.org/10.1002/chin.201414063
https://doi.org/10.1002/chin.201414063
Publikováno v:
ChemInform. 45
The Lewis acid catalyzed reaction yields 3,4-disubstituted phenols from dienones in a highly efficient rearrangement or from allylic substituted phenoles in a cascade reaction.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70ae2458d274d3c94e35159d590d3555
https://doi.org/10.1002/chin.201409096
https://doi.org/10.1002/chin.201409096
Publikováno v:
Journal of Polymer Science Part A: Polymer Chemistry. 35:1535-1541
β-Cyclodextrin (CD) gels crosslinked by epichlorohydrin (CD-gel) were modified with poly(N-isopropylacrylamide) (PIPA; M n 4900) chains. The CD residue in the gel associated with 8-anilino-1-naphthalenesulfonic acid (ANS) more strongly than the free
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b5f24ba6adf798a382862c0396f1840
https://doi.org/10.1002/(sici)1099-0518(199706)35:8<1535::aid-pola22>3.0.co
https://doi.org/10.1002/(sici)1099-0518(199706)35:8<1535::aid-pola22>3.0.co
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :1217-1220
Primary hydroxy groups of β-cyclodextrin (β-CD) have been substituted with thymine (Thy) groups. By photo-irradiation with UV light at 280 nm, the introduced thymine groups adjacent to the CD cavity underwent reversible dimerization and the catalyt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b52d1df7479d22cba51bfd9cd030530
https://doi.org/10.1039/a606245h
https://doi.org/10.1039/a606245h