Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Fumitoshi Shibahara"'
Autor:
Takuya Sonoda, Masaya Kanamori, Koki Endo, Kazuki Miwa, Satoshi Kurumada, Katsunori Suzuki, Makoto Yamashita, Fumitoshi Shibahara
Publikováno v:
Israel Journal of Chemistry.
Publikováno v:
Asian Journal of Organic Chemistry. 7:1323-1326
Publikováno v:
Organic & Biomolecular Chemistry. 15:1810-1820
Various 1-substituted-imidazo[1,5-a]pyridin-3-ylidenes were prepared and characterized. The fundamental character and the effects of substituents on the imidazo[1,5-a]pyridine backbone on the electronic character of carbenes were evaluated using rhod
Autor:
Yasuhiro Kawai, Fumitoshi Shibahara, Shigesaki Kaga, Toshiaki Murai, Kimitaka Futamura, Ryuta Wada
Publikováno v:
Tetrahedron. 83:131978
A new route to thiophene-ring-fused compounds with thionyl chloride as a sulfur source was developed. Use of an excess amount thionyl chloride directly gave the corresponding thiophene-ring-fused compound via further reduction of generated thiophene-
Publikováno v:
Tetrahedron Letters. 57:2945-2948
The arylative cyclization of o -(1-alkynyl)thioanisoles with aryl iodides in the presence of catalytic amounts of [Pd(phen) 2 ][PF 6 ] 2 resulted in the efficient formation of 3-arylated benzo[ b ]thiophenes, and a range of aryl iodides with electron
Autor:
Toshifumi Maruyama, Fumitoshi Shibahara, Hiroaki Kubuki, Tomohiko Mizutani, Akihito Yoshida, Kirara Yamaguchi, Toshiaki Murai
Publikováno v:
Chemistry Letters. 46:1017-1019
The reactions of 2-pyrones and coumarins with hydrochlorosilane, elemental selenium, and 4-dimethylaminopyridine (DMAP) gave 2-selenopyrones and selenocoumarins in moderate to good yields. Their fo...
Publikováno v:
Organic letters. 20(18)
A synthetic route to chiral selenazolines from readily available N-acyloxazolidinones via a selenative rearrangement of a chiral cyclic skeleton is reported. The reaction proceeds in the presence of elemental selenium, a hydrochlorosilane, and an ami
Autor:
Taro Udagawa, Toshiaki Murai, Fumitoshi Shibahara, Saki Kubota, Masafumi Suzuki, Tomoki Fukunaga
Publikováno v:
The Journal of organic chemistry. 83(6)
A highly diastereoselective α-allylation of selenolactams with allyl halides is reported. DFT analyses and experimental observations suggested that this reaction proceeds via a Se-allylation of the eneselenolates of the lactams followed by a seleno-
Publikováno v:
Organic Letters. 17:5392-5395
A direct C-H bond arylation method for thienyl thioamides catalyzed by [Pd(phen)2](PF6)2 was developed. This reaction selectively afforded 2-monoarylated products, while the corresponding amide thiophene derivatives furnished 2,5-diarylated products.
Publikováno v:
Journal of Organometallic Chemistry. 794:76-80
Rh(I) and Ir(I) complexes bearing imidazo[1,5-a]pyridine-1-ylalkyl alcohol as chelating NˆO-monoanionic ligands were prepared as thermally stable compounds. Their spectroscopic properties and structures were determined based on IR and NMR spectra an