HMF is a good starting material for the synthesis of precursors of various pharmaceuticals,
thermo-resistant polymers and complex macrocycles. Among these precursors, one can find …

Previously proposed linear correlationsbetween-bond orders and the magnitudes of nmr
ortho proton-proton spin-spin coupling constants (3/) in unsaturated systems have been …

The isomer ratios for the cycloadducts obtained for the reaction of 3-
methoxydehydrobenzene, generated from 2-amino-6-methoxybenzoic acid by aprotic …

Conformational analysis of the glycosidic bond in the purine riboside series has been
difficult in view of the apparently low energy barriers to rotation about that bond. 2 …

Applications of the Nuclear Overhauser Effect in organic chemistry Page 1 Peter D. Kennewell
Lehigh University Bethlehem, Pennsylvania 18015 Applications of the Nuclear Overhauser Effect …

Analyses of the nmr spectra of 1, 4-dimethylnaphthalene, 1, 4-di-í-butylnaphthalene, and
benzo [c]-phenanthrene are presented. These results confirm earliersuggestions that nmr …

(3) CD Campbell and CW Rees, Proc. Chem. Soc., 296 (1964).(4) CD Campbell and CW
Rees, Chem. Commun., 192 (1965).(5) The B-ring/A-ring ratios were not significantly …

Abstract Mixtures of 2, 6‐and 2, 7‐di‐t‐butylnaphthalene, obtained by the t‐butylation of
naphthalene, can be conveniently separated making use of the fact that only the 2, 6‐isomer …

The acid-catalyzed cyclotetramerization of 2-dimethylaminomethyl-4-/erf-butylpyrrole was
examined. A mixture of all four isomeric tetra-Zerz-butylporphyrins was produced. Each …

6846 trum to the 120 spectrum of II suggests that one bond (a) may be free to rotate, while
the restricted rotation about the others (ß, y) is essentially unchanged. The syntheses of …