MS Paulin, J. Org. Chem., 42, 384 (1977). chen et al., ref 8. configuration was reported. The percent enantiomeric excess (ee) for the 2-propyl-and 2-allylbutyrolactones was based on the specific rotations given by these authors. The enantiomeric lactones (S configuration) given in Table I were prepared in a similar manner by using the 2-alkyl-