Carbon‐13 NMR spectra of 1,3‐dioxolanes. II —determination of α, β and γ parameters for 2‐ and 4‐methyl groups in stereoisomeric derivatives by the pattern molecule method

On the basis of the stereochemistry of the 1,3‐dioxolane ring, the molecular pattern method allows the establishment of α, β and γ parameters for the 2‐Me and 4‐Me substituents. Values of α, β and γ additive parameters for the syn and anti 4‐Me group in 2,2,4‐trisubstituted‐1,3‐dioxolanes are proposed. The average values of the α, β and γ effects for the 2‐Me and 4‐Me groups obtained by the molecular pattern method are consistent with those reported from a multiple linear regression analysis.