Zobrazeno 1 - 10
of 283
pro vyhledávání: '"Nobuyoshi Morita"'
Publikováno v:
Molbank, Vol 2024, Iss 1, p M1769 (2024)
One-pot synthesis of (E)-5-[bromo(phenyl)methylene]-4-phenyl-2-(p-tolyl)-4,5-dihydrooxazole (9) from propargylic alcohol 5 and p-toluamide (6) was achieved via gold(III)-catalyzed propargylic substitution, followed by gold(III)-catalyzed bromocycliza
Externí odkaz:
https://doaj.org/article/71b8040d312c46dfb4176226365f5404
Publikováno v:
Catalysts, Vol 14, Iss 4, p 228 (2024)
An efficient stereoselective synthesis of cis-2,6-disubstituted tetrahydropyrans 14a–c has been achieved via gold-catalyzed Meyer–Schuster rearrangement/hydration/oxa-Michael addition sequence from bis-propargylic alcohols 13a–c. The reaction o
Externí odkaz:
https://doaj.org/article/873c37139a264b47ab4ca8f1fedf86d6
Autor:
Nobuyoshi Morita, Shingo Uchida, Hitomi Chiaki, Naho Ishii, Kentaro Tanikawa, Kosaku Tanaka, Yoshimitsu Hashimoto, Osamu Tamura
Publikováno v:
Molecules, Vol 29, Iss 2, p 378 (2024)
The treatment of N-tosylpropargyl amines 1 with 1,3-dicarbonyl compounds 2 in the presence of AuBr3 (5 mol%) and AgOTf (15 mol%) afforded poly-substituted furans 3 in good-to-high yields via the gold-catalyzed cleavage of the sp3 carbon–nitrogen bo
Externí odkaz:
https://doaj.org/article/25e4b1153aa64c619540718a7b26aaa1
Autor:
Nobuyoshi Morita, Hitomi Chiaki, Shino Aonuma, Kosaku Tanaka, Yoshimitsu Hashimoto, Osamu Tamura
Publikováno v:
Molbank, Vol 2023, Iss 1, p M1600 (2023)
By strategic use of the valence difference between hard gold(III) and soft gold(I) catalysts, one-pot synthesis of (Z)-5-benzylidene-4-phenyl-2-(p-tolyl)-4,5-dihydrooxazole (15) from propargylic alcohol (9) and p-toluamide (13) was achieved via gold(
Externí odkaz:
https://doaj.org/article/bfdd8388db714fa89e799b4b3a18199d
Publikováno v:
Journal of Advanced Mechanical Design, Systems, and Manufacturing, Vol 1, Iss 5, Pp 681-689 (2007)
The ACROSS (Accurately Controlled Routinely Operated Signal System) is used to detect subtle changes in the physical state of Earth's structure. The signal is sinusoidal elastic waves generated by the rotation of a rotor with eccentric mass set in AC
Externí odkaz:
https://doaj.org/article/dd1827535560477789fde50115210f20
Publikováno v:
Journal of Advanced Mechanical Design, Systems, and Manufacturing, Vol 1, Iss 1, Pp 93-101 (2007)
In currently working seismic ACROSS (Accurately Controlled Routinely Operated Signal System) transmitters, an unbalanced rotor with large eccentric mass, which generates elastic waves, is supported by roller bearings. With such a type of bearings, be
Externí odkaz:
https://doaj.org/article/50f977804901437c9001659ee7272e3d
Publikováno v:
IEEE Vehicular Technology Magazine. 18:80-88
Autor:
Kosaku Tanaka, Mayumi Yoshida, Ayaka Yamamoto, Yoshimitsu Hashimoto, Nobuyoshi Morita, Osamu Tamura
Publikováno v:
Advanced Synthesis & Catalysis. 365:1419-1424
Autor:
Osamu Tamura, Nobuyoshi Morita, Hitomi Chiaki, Kanae Ikeda, Kosaku Tanaka, Yoshimitsu Hashimoto
Publikováno v:
Synlett. 34:1068-1074
A gold-catalyzed formal (3+2) cycloaddition of benzylic alcohols with 1-phenylpropenes in an ionic liquid permits the environmentally friendly stereoselective synthesis of polysubstituted indanes in good yields and with high selectivity. The gold cat
Autor:
Norbert Krause, Nobuyoshi Morita, Hitomi Chiaki, Kosaku Tanaka, Yoshimitsu Hashimoto, Osamu Tamura
Publikováno v:
Synlett.
An environmentally friendly stereoselective synthesis of 2,3-dihydrobenzofurans and 1,2,3-trisubstituted indanes in water has been achieved by using a permethylated β-cyclodextrin-tagged N-heterocyclic carbene–gold complex. The gold catalyst can b