Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Shimpei Sugiyama"'
Publikováno v:
Tetrahedron Letters. 52:4468-4472
The reaction of the lithium enolates of α-aryl carbonyl compounds with cyclopropylmagnesium carbenoids, derived from 1-chlorocyclopropyl p-tolyl sulfoxides with i-PrMgCl at low temperature, resulted in the formation of β-aryl carbonyl compounds bea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a234b23de7f74f7cf1e23e711690406b
https://doi.org/10.1016/j.tetlet.2011.06.069
https://doi.org/10.1016/j.tetlet.2011.06.069
Publikováno v:
Synthesis. 2011:1435-1441
The addition reaction of 1-chlorovinyl p-tolyl sulfoxides, derived trom aldehydes and chloromethyl p-tolyl sulfoxide, with the lithium enolate of tert-butyl carboxylates gave adducts in quantitative yields. Treatment of the adducts with trifluoroacet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89f49021638d27aa947731a8753bc15f
https://doi.org/10.1055/s-0030-1259987
https://doi.org/10.1055/s-0030-1259987
Autor:
Yu Awata, Shingo Ogata, Shimpei Sugiyama, Hideki Saitoh, Masashi Ishigaki, Tsuyoshi Satoh, Yuichi Kato
Publikováno v:
Tetrahedron. 67:1102-1113
Treatment of 1-chlorovinyl p-tolyl sulfoxides, which were derived from cyclobutanones and chloromethyl p-tolyl sulfoxide, with lithium enolate of tert-butyl carboxylates, amides, lithium α-sulfonyl carbanions, and lithium α-carbanion of acetonitril
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9174815b93870c547482a34ba6ce309
https://doi.org/10.1016/j.tet.2010.12.023
https://doi.org/10.1016/j.tet.2010.12.023
Autor:
Masashi Ishigaki, Tsuyoshi Satoh, Nobuhito Nakaya, Toshifumi Miyagawa, Takashi Kasuya, Shimpei Sugiyama, Mio Inumaru
Publikováno v:
Synthesis. 2011:397-408
Treatment of 1-chlorocyclobutyl p-tolyl sulfoxides with Grignard reagents such as ethylmagnesium chloride, isopropylmagnesium chloride, and cyclopentylmagnesium chloride in THF at low temperature gave cyclobutylmagnesium carbenoids in high yields. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68f4ac7e2044ad6c0ca1fa7dc29eed56
https://doi.org/10.1055/s-0030-1258391
https://doi.org/10.1055/s-0030-1258391
Autor:
Yoshitaka Hamashima, Makoto Inai, Kazutada Ikeuchi, Toshiyuki Kan, Ryosuke Fujii, Jae-Hoon Choi, Shimpei Sugiyama, Tomohiro Asakawa, Tomohiro Suzuki, Hirokazu Kawagishi
Publikováno v:
Organic & Biomolecular Chemistry. 12(23):3813-3815
We describe a practical, large-scale synthesis of the "fairy-ring" plant-growth regulator 2-azahypoxanthine (AHX), and its biologically active hydroxyl metabolite (AOH) and riboside derivative (AHXr). AHXr, a biosynthetic intermediate, was synthesize
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::36dacc49dde44f0505727747be49c0fa
http://hdl.handle.net/10297/8279
http://hdl.handle.net/10297/8279
Autor:
Makoto Tadokoro, Tsuyoshi Satoh, Tohru Ohbayashi, Takahito Saitou, Shintaro Mitsunaga, Shimpei Sugiyama
Publikováno v:
Tetrahedron: Asymmetry. 20:1697-1708
The synthesis of pipecolic acid and homopipecolic acid derivatives was developed from ω-(2-aminophenyl)-1-chloroalkyl p -tolyl sulfoxides by treatment with i -PrMgCl. An intramolecular nucleophilic substitution reaction of a magnesium carbenoid with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::331706139e2fb0bb327731e276ee41e3
https://doi.org/10.1016/j.tetasy.2009.06.024
https://doi.org/10.1016/j.tetasy.2009.06.024
Publikováno v:
Tetrahedron Letters. 50:4212-4216
Treatment of 1-chlorovinyl p -tolyl sulfoxides, derived from ketones and chloromethyl p -tolyl sulfoxide, with lithium enolate of carboxylic acid tert -butyl esters gave adducts in high yields. The adducts were converted to 1-chlorocyclobutyl p -toly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::747bc5c21820985ea0165dbe6c01be56
https://doi.org/10.1016/j.tetlet.2009.04.038
https://doi.org/10.1016/j.tetlet.2009.04.038
Publikováno v:
Tetrahedron Letters. 50:1961-1964
Treatment of 1-chlorovinyl p-tolyl sulfoxides, derived from cyclobutanones and chloromethyl p-tolyl sulfoxide, with lithium enolate of carboxylic acid tert-butyl esters, lithium enolate of carboxylic acid N,N-dimethylamides, or lithium α-carbanion o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14435269f75e87ddcf63e8355ac4942a
https://doi.org/10.1016/j.tetlet.2009.02.053
https://doi.org/10.1016/j.tetlet.2009.02.053
Publikováno v:
Synthesis. 2009:1323-1335
Treatment of γ- and δ-lactones having a sulfinyl group at the γ- and 5-positions with isopropylmagnesium chloride in THF at -78 °C gave γ-chloromagnesio γ-lactones and δ-chloromagnesio δ-lactones, respectively, by the sulfoxide-magnesium exch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::729b571eaef5dd04c6fc726ee97ad868
https://doi.org/10.1055/s-0028-1088019
https://doi.org/10.1055/s-0028-1088019
Publikováno v:
Tetrahedron: Asymmetry. 19:401-406
Treatment of optically active 1-chlorovinyl p -tolyl sulfoxides with two different substituents at the 2-position, which were synthesized from aldehydes or unsymmetrical ketones and ( R )-(−)-chloromethyl p -tolyl sulfoxide in two or three steps, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::730686d54be5e80f89c4bf2b909bd717
https://doi.org/10.1016/j.tetasy.2008.01.040
https://doi.org/10.1016/j.tetasy.2008.01.040