Zobrazeno 1 - 10
of 118
pro vyhledávání: '"Stuart W. Staley"'
Autor:
Stuart W. Staley, Joanne D. Kehlbeck
Publikováno v:
Journal of the American Chemical Society. 123:8095-8100
A novel low-temperature intramolecular exchange was detected by (13)C NMR spectrometry in the Na(+) and K(+) salts of the title compound. The process causes the pairwise exchange in the dianion ring of C(2"), C(3"), and C(4") with C(8"), C(7"), and C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97d14bbd37099d155a2524478c511a4f
https://doi.org/10.1021/ja011059o
https://doi.org/10.1021/ja011059o
Autor:
Joanne D. Kehlbeck, Stuart W. Staley
Publikováno v:
The Journal of Organic Chemistry. 66:5572-5579
The rate constants for bond shift (k(BS)) in phenylcyclooctatetraene (1b) and its p-nitro and p-methoxy analogues (1a and 1c, respectively) in THF-d(8) were determined by dynamic NMR spectrometry to be identical, but k(BS) is eight times greater at 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc39ea917d011821f5d5e20129d31789
https://doi.org/10.1021/jo010526h
https://doi.org/10.1021/jo010526h
Publikováno v:
The Journal of Organic Chemistry. 66:3871-3877
Dicyclooctatetraenylmethane (1) and dicyclooctatetraenyldimethylsilane (2) in THF-d(8) at 272 K exist as mixtures of diastereomers in ratios of 1:0.8 and 1:1, respectively. Nine energy minima (four meso and five racemic conformers) were located for e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a9cc46a2f35ea6eb15f7ffad1a174d8
https://doi.org/10.1021/jo001793a
https://doi.org/10.1021/jo001793a
Autor:
and Donald V. Scaltrito, Matthew L. Peterson, Stuart W. Staley, Carl A. Morales, Jeffrey T. Strnad, Thomas P. Markotan
Publikováno v:
The Journal of Organic Chemistry. 64:9067-9076
The single-crystal X-ray structures of 6-(4-(dimethylamino)phenyl)-6-methylfulvene (2) and of two polymorphs of 6-(4-(dimethylamino)phenyl)-6-phenylfulvene (3(P21/c) and 3(Pca21)) have been determined and the structures of a series of 6-arylfulvenes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98005351bc820a7f9f2848b0045190a3
https://doi.org/10.1021/jo990931x
https://doi.org/10.1021/jo990931x
Publikováno v:
Organic Letters. 1:565-568
The rate constants for ring inversion (1) (at −31 °C) and bond shift (2) (at 19 °C) in the title compound (3) are 3−5 and 2 times the corresponding values for the 1,4 isomer due to steric hindrance in the ground state of 3.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb314f854d0113b6e8c8105bf2e0f11f
https://doi.org/10.1021/ol990638j
https://doi.org/10.1021/ol990638j
Publikováno v:
Journal of the American Chemical Society. 121:7182-7187
The rate constants for bond shift (kBS) and intramolecular charge transfer (kCT) in alkali metal salts of bicyclooctatetraenyl dianions (12-) in THF-d8 were determined by dynamic NMR spectroscopy. The values of kBS and kCTincrease in the order K < Na
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc66f3cf4edd43c1c310d6e4157b024c
https://doi.org/10.1021/ja990616s
https://doi.org/10.1021/ja990616s
Autor:
Russell A. Grimm, Jeffrey T. Strnad, Stuart W. Staley, Patrik Boman, Gregory S. Martin, Bertil Eliasson
Publikováno v:
Journal of the American Chemical Society. 121:1558-1564
1,4-Dicyclooctatetraenyl-1,3-butadiyne and p-, m-, and o-di(cyclooctatetraenylethynyl)benzene (1−4, respectively) and their dipotassium salts (12-−42-) in THF-d8 have been synthesized and studied b...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e7d699209e62b4f0328872ac3f51e79
https://doi.org/10.1021/ja9831251
https://doi.org/10.1021/ja9831251
Autor:
Stuart W. Staley, Russell A. Grimm, Patrik Boman, Rachel A. Sablosky, Bertil Eliasson, Joanne D. Kehlbeck
Publikováno v:
Journal of the American Chemical Society. 120:9793-9799
The rate constants for ring inversion (kr.i.) and bond shift (kb.s.) in 1 and 2 were determined by dynamic NMR spectrometry while the rate constants for bond shift and intramolecular charge transfe...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65e12013345625631bd4b9c8e2a7cf98
https://doi.org/10.1021/ja980931z
https://doi.org/10.1021/ja980931z
Publikováno v:
Journal of the American Chemical Society. 120:3671-3674
The free energies of activation for bond shift in the carbon group substituted cyclooctatetraenes (COT−M(CH3)3) in THF-d8 at 298 K have been determined to be 16.4, 16.2, 16.2, and 18.1 kcal/mol for M = Si, Ge, Sn, and C, respectively, and 15.6 kcal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c151d75106082cc663efad2bb4201aa
https://doi.org/10.1021/ja963359p
https://doi.org/10.1021/ja963359p
Autor:
Stuart W. Staley, Matthew L. Peterson
Publikováno v:
Structural Chemistry. 9:305-312
The single crystal x-ray structures of (E)-(2-arylethenyl)cyclooctatetraenes 1 and 2 have been determined. The nitro group in 2 does not influence the geometry of the COT ring relative to that of 1. The influence of various substituents on several st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76fe8d32da3dd95a2ceff4078544427e
https://doi.org/10.1023/a:1022487115258
https://doi.org/10.1023/a:1022487115258