Lösungsmitteleffekte in Kernresonanzspektren gesättigter Kohlenwasserstoffe (III). Unterscheidung unpolarer und polarer Effekte bei Steroiden
作者:T. Winkler、W. von Philipsborn
DOI:10.1002/hlca.19690520328
日期:——
Benzene-induced proton NMR. solventshifts of methyl and methylene groups in 25 acyclic and cyclic saturated hydrocarbons have been studied. The dependence of magnitude and sign of these unpolar effects upon the molecular shape is again demonstrated. Solventshifts in polar solutes (hydroxy- and keto-steroids) are shown to originate from a superposition of polar and unpolar effects. The implications