Preparation of B-methyl derivatives of dicarbahexaborane(8). The correlation of proton nuclear magnetic resonance chemical shift measurements in dicarbahexaborane(8) derivatives by employing "ring-current" contributions

1968 ◽  
Vol 7 (9) ◽  
pp. 1754-1757 ◽  
Author(s):  
Thomas Onak ◽  
Dennis Marynick ◽  
Peter Mattschei ◽  
Gary Dunks
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Ring Current ◽  
Proton Nuclear Magnetic Resonance ◽  
Methyl Derivatives ◽  
Derivatives Of ◽  
Nuclear Magnetic

Carbon-13 Nuclear Magnetic Resonance Studies of Some Methyl Substituted Diphenylmethanes

1974 ◽  
Vol 52 (18) ◽  
pp. 3196-3200 ◽  
Author(s):  
Gerald W. Buchanan ◽  
Giorgio Montaudo ◽  
Paolo Finocchiaro
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Ring Current ◽  
Chemical Shifts ◽  
Magnetic Resonance Studies ◽  
Nuclear Magnetic

Carbon-13 n.m.r. chemical shifts are reported for diphenylmethane and nine methylated derivatives. Results are compared with those for related methylbenzenes. In the case of tri-ortho-substituted materials the predominance of a perpendicular conformation is suggested. Ring current calculations show that in contrast to the 1H chemical shift interpretations, the 13C shielding trends cannot originate primarily from anisotropic effects.

Nuclear Magnetic Resonance Studies of Methyl Derivatives of Cytosine

1965 ◽  
Vol 87 (24) ◽  
pp. 5575-5582 ◽  
Author(s):  
Edwin D. Becker ◽  
H. Todd Miles ◽  
Robert B. Bradley
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Studies ◽  
Methyl Derivatives ◽  
Derivatives Of ◽  
Nuclear Magnetic

An improved route to pregna-5,20-dien-3β-ol (muricin aglycone): Carbon and proton nuclear magnetic resonance assignments for the aglycone and a number of related pregnene derivatives

1987 ◽  
Vol 65 (3) ◽  
pp. 666-669 ◽  
Author(s):  
R. D. Dawe ◽  
J. L. C. Wright
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Resonance Assignments ◽  
Proton Nuclear Magnetic Resonance ◽  
Two Dimensional ◽  
Chemical Shift Correlation ◽  
Heteronuclear Chemical Shift ◽  
Nuclear Magnetic

Carbon and proton assignments for muricin aglycone (5) and a number of related pregnenes, carried out with the aid of two-dimensional homo- and heteronuclear chemical shift correlation experiments, have resulted in previously reported carbon assignments for the aglycone being revised. An improved route to muricin aglycone is also reported.

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