~1H NMR spectral studies of some 2,6-diaryl-4-aminothianes

摘要

~1H NMR spectra have been recorded for 4-amino-r(2),t(6)-diphenylthiane 5,three c(4)-amino-r(2),c(6)-diarylthianes 6a-8a and three t(4)-amino-r(2),c(6)-diarylthianes 6b-8b at 270 MHz.The various proton-proton coupling constants and chemical shifts have been determined.Analysis of the vicinal coupling constants suggests compounds 5,6a-8a and 6b-8b largely exist in chair conformation.In 5 the amino group prefers to be equatorial.