Rotatory Dispersion of Configurationally Related Unsaturated Secondary Carbinols and Their Corresponding Chlorides

Abstract

In several instances a periodic change in sign of the partial rotation of the chromophoric groups has been observed with the increase in the distance of these groups from the asymmetric carbon atom. In many unsaturated substances, the ethylenic bond is known to possess a partial rotation of significant value. It was desired to determine whether this partial rotation is subject to a periodic change in sign with the progressive increase in the distance of the double bond from the asymmetric center. The observations reported here seem to indicate that such a change exists although it is expressed less strikingly than in the case of the carbonyl group previously discussed.