Zobrazeno 1 - 10
of 156
pro vyhledávání: '"Gary L. Gard"'
One-pot syntheses of 1,2,3-triazoles containing a pentafluorosulfanylalkyl group via click chemistry
Publikováno v:
Tetrahedron Letters. 51:6951-6954
1,4-Disubstituted 1,2,3-triazoles containing a pentafluorosulfanylalkyl group were synthesized in good to excellent yields (57–91%) by the click cycloadditions of in situ generated SF 5 -alkyl azides with aromatic and aliphatic alkynes. Nucleophili
Publikováno v:
Chemistry - A European Journal. 15:9897-9904
N-C bonded (non-bridged) 5-(1,2,3-triazol-1-yl)tetrazoles were synthesized by the Cu(I)-catalyzed 1,3-dipolar azide-alkyne cycloaddition click reaction using 5-azido-N-(propan-2-ylidene)-1H-tetrazole (1). For example, the click reaction of 1 in the p
Autor:
Gary L. Gard, Rolf W. Winter
Publikováno v:
Journal of Fluorine Chemistry. 128:896-901
A stable and storable precursor of 2-SF 5 -butadiene, 3-SF 5 -3-sulfolene, has been synthesized and its reactivity studied with several olefinic compounds. When SF 5 Br is added to sulfolene, 3-bromo-4-SF 5 -sulfolane is formed and when reacted furth
Autor:
Michael E. Sitzmann, Jean'ne M. Shreeve, Rolf W. Winter, Chengfeng Ye, Haixiang Gao, Gary L. Gard
Publikováno v:
European Journal of Inorganic Chemistry. 2006:3221-3226
New quaternary salts of pentafluorosulfanyl-substituted (SF5) N-methylimidazole (1), 4-amino-1,2,4-triazole (3) or pyridine (5) were prepared and characterized. Most of the salts exhibit good thermal stabilities and low melting points placing them in
Autor:
Rolf W. Winter, J. A. Smith, Timothy J. R. Weakley, Gary L. Gard, Shankar B. Rananavare, Nicole A. Hannah, Robert A. DiStasio
Publikováno v:
The Journal of Physical Chemistry B. 108:19940-19948
Novel liquid crystals based on fluorinated carbon chains and terminated with SF5 groups are presented for the first time. Attachment of an SF5 group separated from a benzylidine group by a fluorinated spacer leads to monotropic nematic and smectic ph
Autor:
Leif J. Sæthre, Rolf W. Winter, Gary L. Gard, T. Darrah Thomas, Christiane Leibold, Heinz Oberhammer
Publikováno v:
Inorganic Chemistry. 43:3942-3947
The structure of SF(5)OSO(2)F has been investigated using gas-phase electron diffraction and quantum-chemical calculations. It is found to exist primarily in the gauche form (SF(5) group gauche relative to the S-F bond of the SO(2)F group with phi(S-
Autor:
John A. Schlueter, Russell W Giannetta, Antony Carrington, Javid Mohtasham, Aravinda M. Kini, Rolf W. Winter, D. D. Lawrie, Urs Geiser, Ruslan Prozorov, Gary L. Gard
Publikováno v:
Journal de Physique IV (Proceedings). 114:211-215
Measurements of the London penetration depth, λ(T), are reported for crystals of superconducting κ-(ET) 2 Cu[N(CN),]Br (T C = 11.6 K) and β-(ET) 2 -SF 5 CH 2 CF 2 SO 3 (T C = 5.2 K) at temperatures down to 0.35 K. For K-(ET)2 Cu[N(CN)2]Br the supe
Autor:
Rolf W. Winter, Brendan Twamley, P. G. Nixon, Jean'ne M. Shreeve, Javid Mohtasham, Gary L. Gard
Publikováno v:
Journal of Fluorine Chemistry. 125:553-560
A series of reactions between SF5CF2CF2I and SF5(CF2)4I with F2CCF2 was carried out in an effort to find the most effective methods for chain-extension. Also, for the first time, SF5(CF2)8I and SF5(CF2)10I have been prepared and isolated. The reac
Publikováno v:
Inorganic Chemistry. 42:6142-6146
The first quaternary salts of pyridine (2), N-methyl imidazole (3), N-propyl triazole (4), and pyridazine (5) that contain the pentafluorosulfanyl (SF(5)) group were prepared and characterized. Neat reactions of the aromatic nitrogen compounds with S
Autor:
Daniel J. Graham, N. R. Holcomb, Robin J. Terjeson, David G. Castner, Gary L. Gard, David W. Grainger, P. G. Nixon, Javid Mohtasham, Rolf W. Winter
Publikováno v:
Journal of Fluorine Chemistry. 115:107-113
A new perfluorinated acrylate monomer containing the SF 5 (CF 2 ) 6 -perfluorinated side chain was synthesized and polymerized into films. Bulk monomer characterization is consistent with the molecular structure based on FTIR, mass spectrometry and N