Showing papers by "University of North Carolina at Wilmington published in 1974"
TL;DR: Natural CD, proton NMR, and electronic absorption spectroscopies were employed to determine the nature of the Pd(II) coordination sphere and to learn of changes of configuration which the coordinated dipeptide molecule might undergo, as the pH is changed from 1.3 to 13.
14 citations
TL;DR: In this article, a meta-methyl substituent on diphenyl ether blocks attack ortho to it in the reaction with phosphorus trichloride and aluminum chloride, allowing the synthesis in acceptable yield of the phenoxaphosphinic acids II-VI.
Abstract: A meta-methyl substituent on diphenyl ether blocks attack ortho to it in the reaction with phosphorus trichloride and aluminum chloride, allowing the synthesis in acceptable yield of the phenoxaphosphinic acids II–VI. The NMR of the aromatic hydrogens reveals a long-range coupling of 8 Hz between phosphorus and hydrogens at the 4- and 6-positions. Revised rules for predicting methyl chemical shifts of phenoxaphosphinic acids are given.
7 citations
1 citations