Charles E. Klopfenstein

Chemistry of thienopyridines. III. Syntheses of the thieno[2,3-b]- and thieno[3,2-b]pyridine systems. Direct substitution into the former system

L. H. Klemm, Charles E. Klopfenstein, Reinhard Zell et al. · The Journal of Organic Chemistry · 1969 · 78 citations

Natural Sciences, Chemistry, Medicinal Chemistry +10

Chemistry of thienopyridines. IX. Direct nitration of thieno[2,3‐<i>b</i>]pyridine and thieno[3,2‐<i>b] pyridine</i>

L. H. Klemm, Reinhard Zell, I. T. Barnish et al. · Journal of Heterocyclic Chemistry · 1970 · 50 citations

Natural Sciences, Chemistry, Medicinal Chemistry +13

Dianions of trans-15,16-dialkyldihydropyrenes. Paramagnetic ring current effects

Reginald H. Mitchell, Charles E. Klopfenstein, V. Boekelheide · Journal of the American Chemical Society · 1969 · 36 citations

Natural Sciences, Chemistry, Analytical Chemistry +8

Electronic configurations of amido radicals

Thomas Koenig, J. A. Hoobler, Charles E. Klopfenstein et al. · Journal of the American Chemical Society · 1974 · 32 citations

Natural Sciences, Chemistry, Organic Chemistry +5

Intramolecular Diels—Alder Reactions. III. Cyclizations of trans-Cinnamyl and Phenylpropargyl Phenylpropiolates^1a

L. H. Klemm, D. Hsu Lee, K. W. Gopinath et al. · The Journal of Organic Chemistry · 1966 · 29 citations

Natural Sciences, Chemistry, Enzymology +5