List of top Organic Chemistry Questions on Stereochemistry

The correct statement about the following quaternary ammonium ion is:

The reaction(s) that give(s) meso-1,2-diphenylethane-1,2-diol as the major product is(are)

In the \(^1\mathrm{H}\) NMR spectrum of compound \(\mathbf{X}\), the coupling constant (\(J_{ab}\)) between \(H_a\) and \(H_b\) is 3 Hz. The amino alcohol(s) that give(s) \(\mathbf{X}\) on reaction with methyl iodide followed by heating is(are)

The difference in the number of gauche interactions present in diaxial and diequatorial chair conformations of trans-1,2-dimethylcyclohexane is (in integer).

The specific rotation $[\alpha]_D^{25}$ of (S)-2-pentanol is +13.0 degreesA one molar solution of (S)-2-pentanol is mixed with an equal volume of one molar solution of racemic 2-pentanolThe observed rotation, $\alpha$, of the resulting solution, when measured in a polarimeter tube of path length 10 cm is _ _ _ degrees. (rounded off to three decimal places)

The number of stereogenic centre(s) present in the given alkaloid is _ _ _. (answer in integer)

The molecules that possess $\sigma$ (plane of symmetry) as the ONLY element of symmetry are

The correct relationship between the molecules X and Y is that, they are _ _ _.

The molecule that gets inter-converted into its enantiomer, upon ring flipping in its chair conformation, is _ _ _.

Most stable conformation of ethane: