Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Michinori Ōki"'
Publikováno v:
Heteroatom Chemistry. 15:241-245
The title organoboron complex undergoes dissociation of the intramolecular B–S coordination bond much faster than the corresponding mono ethylthiomethyl complex as revealed by the dynamic NMR study. The facile dissociation is attributable to an SN2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6326bf345b78d06d414abe5eaafa997
https://doi.org/10.1002/hc.20005
https://doi.org/10.1002/hc.20005
Publikováno v:
Tetrahedron. 58:10345-10351
All the three possible rotamers of the title compound were separated by chromatography, and unambiguously identified by NMR and X-ray analysis. One of the isomers was optically inactive Ci conformation. The other optical active forms were resolved to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f9aac17393fe7e02999d467f1223fbc
https://doi.org/10.1016/s0040-4020(02)01408-4
https://doi.org/10.1016/s0040-4020(02)01408-4
Autor:
Michinori Oki
Rotation about the Carbon-Carbon single bond is generally regarded to be unrestricted. About 50 years ago, rotational isomers were found to exhibit optical activity: substituted biphenyl derivatives. However, the author has investigated other classes
Publikováno v:
Tetrahedron Letters. 39:7729-7732
2-Fluoro-4,4,5,5-tetramethyl-1,3-dioxolane was shown to be a useful compound for independently determining the rate constants of contact ion pair and solvent-separated ion pair formations. The compound was used to determine rate constants for toluene
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e069e52b718d0041206f991911a49afd
https://doi.org/10.1016/s0040-4039(98)01684-0
https://doi.org/10.1016/s0040-4039(98)01684-0
Publikováno v:
Organometallics. 17:4155-4163
To distinguish between dissociation of a B−N coordination bond by SN1- and SN2-type mechanisms, two series of 1,3,2-dioxaborolanes (boronates) and BEt2 (borane) complexes carrying a 2,6-bis((dimeth...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4847d332fb04d49f6096780832f8fa0f
https://doi.org/10.1021/om9803974
https://doi.org/10.1021/om9803974
Publikováno v:
Organometallics. 16:4012-4015
Mono-, bis-, and tris(tricarbonylchromium) complexes of triptycene were synthesized by the reaction of triptycene with Cr(CO)6. The stereochemistry of the two isomeric bimetallic complexes of Cs and C2v symmetries was determined from the NMR spectra.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31932251f2fcce7271a353c9103bf1dc
https://doi.org/10.1021/om9703705
https://doi.org/10.1021/om9703705
Publikováno v:
Tetrahedron Letters. 38:4575-4578
Reactions of ap- and sp-rotamers of 1-(9-fluorenyl)-2-(1-methylethenyl)-naphthalene with m-chloroperoxybenzoic acid afforded the corresponding epoxides. Of these, the ap-epoxide was found to contain a carbon atom, the structure of which is a distorte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba96860e1534fc02a10f9f248384dcf7
https://doi.org/10.1016/s0040-4039(97)00977-5
https://doi.org/10.1016/s0040-4039(97)00977-5
Autor:
Michinori Ōki, Shinji Toyota
Publikováno v:
Journal of Organometallic Chemistry. 534:1-6
An unusually stable organocopper compound carrying an intramolecular sulfane ligand, 2-(ethylthio)phenylcopper, was synthesized via the reaction of the corresponding organolithium with a copper(I) halide (CuX). This compound was obtained in two forms
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c49274feb0cda877402fa4f9628165c
https://doi.org/10.1016/s0022-328x(96)06496-0
https://doi.org/10.1016/s0022-328x(96)06496-0
Publikováno v:
Heteroatom Chemistry. 8:35-43
The mechanism of isomerization of allyl thiocyanate to allyl isothiocyanate has been investigated both experimentally and theoretically. The kinetic study indicates that the reaction is unimolecular and is not ionic. The entropy of activation suggest
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41b4b0003931a214fb49ca719bfe4c08
https://doi.org/10.1002/(sici)1098-1071(1997)8:1<35::aid-hc5>3.0.co
https://doi.org/10.1002/(sici)1098-1071(1997)8:1<35::aid-hc5>3.0.co
Publikováno v:
Journal of the American Chemical Society. 118:11460-11466
Optically active and inactive rotational isomers of 9-(1,1-dimethyl-3-butenyl)-11,12-bis(methoxycarbonyl)-9,10-dihydro-9,10-ethenoanthracene were isolated. The absolute conformations of these optic...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3e6a14d8da58f5e0413156fc185249c
https://doi.org/10.1021/ja961520q
https://doi.org/10.1021/ja961520q