4,5-Dibenzyloxybenzyne as a synthon for diels-alder reactions. The synthesis of 6,7-dihydroxy-1,4-ethano-1,2,3,4-tetrahydroisoquinolines as rigid analogs of adrenergic agents. Assignment of proton and carbon-13 NMR parameters using homonuclear and heteronuclear two-dimensional chemical shift correlation NMR spectroscopy

1985 ◽  
Vol 22 (4) ◽  
pp. 1055-1060 ◽  
Author(s):  
Frank W. Muellner ◽  
Ashraf N. Abdel-Sayed ◽  
Ludwig Bauer
Keyword(s):  
Nmr Spectroscopy ◽  
Chemical Shift ◽  
Diels Alder ◽  
Two Dimensional ◽  
Chemical Shift Correlation ◽  
Adrenergic Agents ◽  
Nmr Parameters

scholarly journals Two-Dimensional NMR Spectroscopy of Siomycin A. Proton-Carbon-13 Chemical Shift Correlation

1982 ◽  
Vol 123 (1) ◽  
pp. 127-131 ◽  
Author(s):  
Nigel J. CLAYDEN ◽  
Fuyuhiko INAGAKI ◽  
Robert J. P. WILLIAMS ◽  
Gareth A. MORRIS ◽  
Kazuo TORI ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Chemical Shift ◽  
Two Dimensional ◽  
Chemical Shift Correlation ◽  
Siomycin A

Preparation and properties of rhodium(I) and iridium(I) diolefin complexes of heterodifunctional phosphorus–imine chelating ligands and a related iminophosphine. 103Rh NMR parameters of the rhodium complexes obtained via indirect two-dimensional 31P, 103Rh{1H} NMR spectroscopy

1995 ◽  
Vol 73 (5) ◽  
pp. 635-642 ◽  
Author(s):  
David J. Law ◽  
Glen Bigam ◽  
Ronald G. Cavell
Keyword(s):  
Nmr Spectroscopy ◽  
Chemical Shift ◽  
1H Nmr Spectroscopy ◽  
Rhodium Complexes ◽  
Chelating Ligands ◽  
Two Dimensional ◽  
H Nmr ◽  
Nmr Parameters ◽  
Nmr Data

Treatment of [M(cod)Cl]2 (M = Rh, Ir) with iminophosphoranophosphine ligands of the type Ph2PQP(Ph2)=NSiMe3 (Q = CH2, CH2CH2, 1,2-C6H4) afforded the new metallacycles [Formula: see text] through elimination of Me3SiCl, ultimately "anchoring" the ligand to the metal through a metal–nitrogen σ bond. The phosphine functionality completes the chelate. Cationic complexes of the type [M(cod)L2]+PF6− (M = Rh or Ir; L2 = Ph2PQPPh2NR where Q = CH2, CH(CH3), 1,2-C6H4, and R = p-C6F4CN, C6H2F(NO2)2, and C6H3(NO2)2 or L = Ph2PN=C(H)Ph) were readily prepared by treating [M(cod)Cl]2 with L2 and KPF6. The detection and chemical shift determination of the insensitive 103Rh nucleus was easily accomplished via 31P detected indirect two-dimensional 31P, 103Rh{1H} NMR spectroscopy. The 103Rh, 1H, and 31P NMR data are discussed. Keywords: rhodium, iridium, phosphoranimine, iminophosphine, Rh NMR.

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