Structural elucidation with nuclear magnetic resonance spectroscopy. Diels-Alder adducts of 1-aminoanthracene and maleic anhydride: restricted rotation about the aryl C(1)-N bond and intrinsic asymmetry about the imide (Nsp2-Csp3) system

1977 ◽  
Vol 42 (23) ◽  
pp. 3736-3740 ◽  
Author(s):  
Shiva Mohan Verma ◽  
M. Dhaneshwar Singh
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Maleic Anhydride ◽  
Nuclear Magnetic Resonance Spectroscopy ◽  
Structural Elucidation ◽  
Diels Alder ◽  
Resonance Spectroscopy ◽  
Restricted Rotation ◽  
Nuclear Magnetic

Diels–Alder reaction between cyclopentadiene and 3-O-acetyl-5,6-dideoxy-1,2-O-isopropylidene-6-nitro-α-D-xylo-hex-5-enose

1970 ◽  
Vol 48 (6) ◽  
pp. 1030-1032 ◽  
Author(s):  
W. A. Szarek ◽  
J. S. Jewell
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectroscopy ◽  
Alder Reaction ◽  
Diels Alder ◽  
Resonance Spectroscopy ◽  
Diels Alder Reaction ◽  
Crystalline Adduct ◽  
Nuclear Magnetic

A Diels–Alder reaction between cyclopentadiene and 3-O-acetyl-5,6-dideoxy-1,2-O-isopropylidene-6-nitro-α-D-xylo-hex-5-enose (3) gave a crystalline adduct, whose structure has been established to be that of 5-endo-nitro-6-exo-(3′-O-acetyl-1′,2′-O-isopropylidene-α-D-xylo-tetrofuranos-4′-yl)-2-norbornene (4) by nuclear magnetic resonance spectroscopy.

Correction to Complete Structural Elucidation of an Oxidized Polysialic Acid Drug Intermediate by Nuclear Magnetic Resonance Spectroscopy

2016 ◽  
Vol 27 (8) ◽  
pp. 1958-1958
Author(s):  
G. Joseph Ray ◽  
Neil Ravenscroft ◽  
Jürgen Siekmann ◽  
Zhenqing Zhang ◽  
Paul Sanders ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectroscopy ◽  
Polysialic Acid ◽  
Structural Elucidation ◽  
Resonance Spectroscopy ◽  
Nuclear Magnetic

1,2,4-Triazines. IV. The Structural Elucidation of Some New N-Methyl 3-Amino-1,2,4-Triazin-5(2H)-ones by Carbon-13 Nuclear Magnetic Resonance Spectroscopy

1988 ◽  
Vol 41 (4) ◽  
pp. 609 ◽  
Author(s):  
NW Jacobsen ◽  
SE Rose
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectroscopy ◽  
Long Range ◽  
Structural Elucidation ◽  
Resonance Spectroscopy ◽  
Amino Group ◽  
Nuclear Magnetic

Methylation of 3-amino-1,2,4-triazin-5(2H)-one yields a mixture of the zwitterion 3-amino-1-methyl-1,2,4-triazinium-5-olate and 3-amino-2- methyl-1,2,4-triazin-5(2H)-one. With appropriate substituents located at position C6 and on the exocyclic amino group at C3, methylation was directed to the N1 or N2 positions exclusively. All methylation isomers were identified by carbon-13 nuclear magnetic resonance spectroscopy by reference to long-range coupling patterns.

Complete Structural Elucidation of an Oxidized Polysialic Acid Drug Intermediate by Nuclear Magnetic Resonance Spectroscopy

2014 ◽  
Vol 25 (4) ◽  
pp. 665-676 ◽  
Author(s):  
G. Joseph Ray ◽  
Neil Ravenscroft ◽  
Jürgen Siekmann ◽  
Zhenqing Zhang ◽  
Paul Sanders ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectroscopy ◽  
Polysialic Acid ◽  
Structural Elucidation ◽  
Resonance Spectroscopy ◽  
Nuclear Magnetic
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