74985-58-3Relevant academic research and scientific papers
Studies on the Conformation of Some Substituted 4-Selenanols
Nanjappan, Palaniappan,Ramalingam, Kondareddiar,Satyamurthy, Nagichettiar,Berlin, Kenneth Darrell
, p. 2542 - 2546 (2007/10/02)
The second-order rate constants for acetylation with acetic anhydride in pyridine have been measured at 40 deg C for seven pairs of epimeric 4-selenanols, and the conformations of these compounds were determined from the kinetic data. 1H NMR and 13C NMR spectra were also recorded and analyzed.The 1H chemical shift of the carbinol protons and 13C chemical shift of the carbinol carbons are analyzed in the light of previously established correlations.Carbon-13 chemical shift data suggest that 2,2-dimethyl-trans-6-(p-chlorophenyl)selenan-r-4-ol exists in a nonchair conformation.
Preparation and Stereochemistry of Some Substituted 4-Selenanones and 4-Selenanols
Nanjappan, Palaniappan,Ramalingam, Kondareddiar,Herd, Melvin D.,Arjunan, Palanisamy,Berlin, K. Darrell
, p. 4622 - 4629 (2007/10/02)
The preparation of a number of substituted 4-selenanones and four epimeric pairs of 4-selenanols has been described.The configuration and conformation of the 4-selenanones and 4-selenanols were assigned on the basis of IR, 1H NMR, and 13C NMR spectral data, and the selenane ring was shown to be predominantly in the chair form.The dissociation constants of cyanohydrins from six substituted 4-selenanones were measured in 80percent dioxane at 25 deg C, and the results were analyzed in terms of steric parameters in the flattened ring systems.
