Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Vijay Gnanadesikan"'
Autor:
Vijay Gnanadesikan, E. J. Corey
Publikováno v:
Journal of the American Chemical Society. 130:8089-8093
An effective strategy has been developed for the efficient site-selective epoxidation of poylolefinic isoprenoid alcohols, based on the use of an internal control element for intramolecular reaction. The approach is illustrated by application to a se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c7ba27789fc168c57594937cebcd989
https://doi.org/10.1021/ja801899v
https://doi.org/10.1021/ja801899v
Autor:
Takashi Ohshima, Masakatsu Shibasaki, Vijay Gnanadesikan, Tetsuhiro Nemoto, Hiroyuki Kakei, Shin Ya Tosaki
Publikováno v:
Tetrahedron. 59:10485-10497
Highly enantioselective catalytic asymmetric epoxidation of α,β-unsaturated carboxylic acid imidazolides and simple amides was developed. In the presence of 5–10 mol% of lanthanide–BINOL complexes, the reaction proceeded smoothly with high subs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12e850d5f435ac22d5a100f957191c5b
https://doi.org/10.1016/j.tet.2003.06.010
https://doi.org/10.1016/j.tet.2003.06.010
Publikováno v:
Organic Letters. 10:1055-1057
An analysis is presented to explain the faster rate of ring formation 5 --> 7 as compared to 6 --> 8.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d514a8da42ef20c846269da3f62f2947
https://doi.org/10.1021/ol702868z
https://doi.org/10.1021/ol702868z
Publikováno v:
Journal of the American Chemical Society. 132(13)
The full details of a catalytic asymmetric syn-selective nitro-Mannich reaction promoted by heterobimetallic Cu/Sm/dinucleating Schiff base complexes are described, demonstrating the effectiveness of the heterobimetallic transition metal/rare earth m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::021f0ffdc27241d59133844affef8d21
https://pubmed.ncbi.nlm.nih.gov/20218689
https://pubmed.ncbi.nlm.nih.gov/20218689
Autor:
Keiichi Hara, Noriyuki Yamagiwa, Shin Ya Tosaki, Shigeki Matsunaga, Hiroyuki Morimoto, Masakatsu Shibasaki, Vijay Gnanadesikan, Mari Sugita, Shinji Harada
Publikováno v:
ChemInform. 40
Full details of the kinetic resolution of tertiary nitroaldols derived from simple ketones are described. Mixed BINOL/biphenol La–Li heterobimetallic complexes gave the best selectivity in retro-nitroaldol reactions of racemic tertiary nitroaldols.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::434e47551989968727896524ab04e7e1
https://doi.org/10.1002/chin.200944051
https://doi.org/10.1002/chin.200944051
Publikováno v:
ChemInform. 38
syn-Selective catalytic asymmetric nitro-Mannich reactions using a heterobimetallic Cu/Sm/Schiff base complex are described. The present method is complementary to the previously reported methods, and products were obtained in high syn-selectivity (>
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c335dc81657026be23eb6156d469539
https://doi.org/10.1002/chin.200735049
https://doi.org/10.1002/chin.200735049
Autor:
Vijay Gnanadesikan and, E. J. Corey
Publikováno v:
Organic letters. 8(21)
[reaction: see text] A novel catalytic system has been developed for the enantioselective synthesis of beta-lactones from ketene and aldehydes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64994311811f1c1ace317bfb4682e368
https://pubmed.ncbi.nlm.nih.gov/17020342
https://pubmed.ncbi.nlm.nih.gov/17020342
Autor:
Keiichi Hara, Shigeki Matsunaga, Masakatsu Shibasaki, Vijay Gnanadesikan, Shinji Harada, Shin Ya Tosaki, Mari Sugita, Hiroyuki Morimoto, Noriyuki Yamagiwa
Publikováno v:
Journal of the American Chemical Society. 128(36)
Full details of the kinetic resolution of tertiary nitroaldols derived from simple ketones are described. Mixed BINOL/biphenol La–Li heterobimetallic complexes gave the best selectivity in retro-nitroaldol reactions of racemic tertiary nitroaldols.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05bb382f3ba021b1438081de15314265
https://pubmed.ncbi.nlm.nih.gov/16953615
https://pubmed.ncbi.nlm.nih.gov/16953615
Autor:
Yuhei Fukuta, Tetsuhiro Nemoto, Tomoyuki Shibuguchi, Masakatsu Shibasaki, Vijay Gnanadesikan, Takashi Ohshima
Publikováno v:
Journal of the American Chemical Society. 125(37)
We developed a versatile synthetic process for aeruginosin 298-A as well as several attractive analogues, in which all stereocenters were controlled by a catalytic asymmetric phase-transfer reaction and epoxidation. Furthermore, drastic counteranion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a3d1560ce7ec60d14e8bdbebe3ba9b5c
https://pubmed.ncbi.nlm.nih.gov/16220936
https://pubmed.ncbi.nlm.nih.gov/16220936
Autor:
Masakatsu Shibasaki, Yoshihisa Sei, Vijay Gnanadesikan, Takashi Ohshima, Kosuke Katagiri, Kentaro Yamaguchi, Yoshihiro Horiuchi, Hyuma Masu
Publikováno v:
Chemistry (Weinheim an der Bergstrasse, Germany). 11(18)
The development of a direct catalytic asymmetric aldol-Tishchenko reaction and the nature of its catalyst are described. An aldol-Tishchenko reaction of various propiophenone derivatives with aromatic aldehydes was promoted by [LaLi 3 (binol) 3 ] (LL
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcb029b7c55c9d026df9fb01d2d810ea
https://pubmed.ncbi.nlm.nih.gov/16003811
https://pubmed.ncbi.nlm.nih.gov/16003811