Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Katsuhiro Shimono"'
Publikováno v:
Chemistry - An Asian Journal. 4:1289-1297
Double Horner-Wadsworth-Emmons reaction of (E)-2,3-diaryl-1,4-bis(diethylphosphonyl)but-2-ene with (p-substituted) benzaldehydes gave (1E,3E,5E)-1,3,4,6-tetraarylhexa-1,3,5-trienes in moderate to good yields. Substitution of electron-withdrawing or -
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::077f77cd89bc68c56f763b295b6c4e3a
https://doi.org/10.1002/asia.200900110
https://doi.org/10.1002/asia.200900110
Publikováno v:
Journal of Organometallic Chemistry. 686:286-293
gem-Silylborylation of halomethyllithiums with silylboranes allows us to prepare boryl(silyl)methanes substituted by such heteroatoms as Cl, Br, I, O, S, Si, Ge, and Sn in high yields. With B, Si, and Sn- or B, Ge, and Si-substituted methanes, the fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94baa5c35dd8acae840bff5187db97fa
https://doi.org/10.1016/s0022-328x(03)00561-8
https://doi.org/10.1016/s0022-328x(03)00561-8
Autor:
Shin-ichi Kiyomoto, Katsuhiro Shimono, Masaki Shimizu, Ikuhiro Nagao, Takuya Kurahashi, Tamejiro Hiyama
Publikováno v:
Bulletin of the Chemical Society of Japan. 81:518-520
Diels–Alder reaction of 2,3-bis(pinacolato)boryl-1,3-butadiene with electron-deficient alkenes and dimethyl acetylenedicarboxylate proceeded smoothly upon heating, giving rise to the corresponding ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d439cbf0543e43f057e51c085ed9a5f2
https://doi.org/10.1246/bcsj.81.518
https://doi.org/10.1246/bcsj.81.518
Publikováno v:
Synlett. 2007:1969-1971
The boryl group CIS to the C(3)=C(4) group in 2,4-aryl-1,1-bis(pinacolatoboryl)-1,3-butadienes undergoes Pd-catalyzed cross-coupling reaction with aryl iodides stereoselectively at room temperature, giving rise to the corresponding boronates as a sin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cb45ed7a3b9a90943ee0de1b48f528d4
https://doi.org/10.1055/s-2007-982567
https://doi.org/10.1055/s-2007-982567
Autor:
Tamejiro Hiyama, Katsuhiro Shimono, Ikuhiro Nagao, Masaki Shimizu, Shin-ichi Kiyomoto, Takuya Kurahashi
Publikováno v:
ChemInform. 39
Diels–Alder reaction of 2,3-bis(pinacolato)boryl-1,3-butadiene with electron-deficient alkenes and dimethyl acetylenedicarboxylate proceeded smoothly upon heating, giving rise to the corresponding ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3aaa73e3a8aaaa21eb8db7d4f2935ca
https://doi.org/10.1002/chin.200834180
https://doi.org/10.1002/chin.200834180
Publikováno v:
ChemInform. 38
Treatment of (Z)-1,2,3,4-tetrakis(pinacolatoboryl)but-2-ene, prepared from 2,3-bis(pinacolatoboryl)buta-1,3-diene and bis(pinacolato)diboron, with three molar equivalents of aldehyde in toluene at 100 degrees C gave the 2,3-bis(alkylidene)alkane-1,5-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3fe49a279cb64fc5905d1d5f04d6eac4
https://doi.org/10.1002/chin.200752169
https://doi.org/10.1002/chin.200752169
Autor:
Katsuhiro Shimono, Tamejiro Hiyama, Masaki Shimizu, Kei Tanaka, Takuya Kurahashi, Shin-ichi Kiyomoto, Ikuhiro Nagao
Publikováno v:
Chemistry, an Asian journal. 2(11)
Treatment of 1,1-bis(pinacolatoboryl)ethene with an excess of 1-bromo-1-lithioethene gave 2,3-bis(pinacolatoboryl)-1,3-butadiene in high yield. Palladium-catalyzed cross-coupling of the resulting diborylbutadiene with aryl iodides took place smoothly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::420e692d917fcb6835fb5af379ed46d2
https://pubmed.ncbi.nlm.nih.gov/17828718
https://pubmed.ncbi.nlm.nih.gov/17828718
Autor:
Michael Schelper, Katsuhiro Shimono, Takuya Kurahashi, Masaki Shimizu, Tamejiro Hiyama, Ikuhiro Nagao
Publikováno v:
ChemInform. 38
Cyclopropylidene lithium carbenoids reacted with bis(pinacolato)diboron in THF/Et2O at −110 °C to give various 1,1-diborylated cyclopropanes in good yields. Treatment of the diborylated cyclopropan...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7367b1fee4c99763454a6bbf20c11245
https://doi.org/10.1002/chin.200712038
https://doi.org/10.1002/chin.200712038
Publikováno v:
ChemInform. 38
(Z)-l,2,3,4-Tetraboryl-2-butene reacted with three molecules of 2,3-dialkylidene-l,5-alkanediol as a single stereoisomer. Preparation and triple addition of the butene can be effected in a single operation.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d0c2d9f9dbfd96f7a9e6450fba00dcc
https://doi.org/10.1002/chin.200702027
https://doi.org/10.1002/chin.200702027
Autor:
Katsuhiro Shimono, Masaki Shimizu, Michael Schelper, Tamejiro Hiyama, Chihiro Nakamaki, Takuya Kurahashi
Publikováno v:
Journal of the American Chemical Society. 127:12506-12507
Palladium-catalyzed cross-coupling reaction of 1,1-diboryl-1-alkenes with aryl and alkenyl iodides was found to proceed stereoselectively, giving rise to the corresponding mono-coupled product as a single diastereomer with E-configuration. Second cou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac5de7d63d98100d983a94bf69ad6eaa
https://doi.org/10.1021/ja054484g
https://doi.org/10.1021/ja054484g