Study of the direct carbon-proton constants of the spin-spin interaction in sulfolane derivatives

Structure and conformations of 2‐substituted and 3‐substituted alumolanes in polar solvents: a direct NMR observation

“…Previously, similar effects were observed in some five‐membered heterocyclic compounds with asymmetric carbon atoms in the C‐3 position, e.g. substituted sulfolanes and silacyclopentanes …”