Conformational Preference in Benzyloxy- and Siloxy-substituted Thianes, Thiane 1-Oxides, and Thiane 1,1-Dioxides
摘要:
Conformer ratios in 4-benzyloxy- and 4-siloxy-substituted thianes, cis- and trans-thiane 1-oxides, thiane 1,1-dioxides, and dihydrothiines were revealed on the basis of their low temperature H-1 nmr analyses. Extreme benzyloxy- and siloxy-axial (or -pseudoaxial) conformer preferences in trans- thiane 1-oxides, thiane 1,1-dioxides, and dihydrothiines were clearly demonstrated.
Conformer ratios in 4-benzyloxy- and 4-siloxy-substituted thianes, cis- and trans-thiane 1-oxides, thiane 1,1-dioxides, and dihydrothiines were revealed on the basis of their low temperature H-1 nmr analyses. Extreme benzyloxy- and siloxy-axial (or -pseudoaxial) conformer preferences in trans- thiane 1-oxides, thiane 1,1-dioxides, and dihydrothiines were clearly demonstrated.