El. Grimm et al., FACILE CONSTRUCTION OF MEDIUM-SIZED CARBOCYCLES, TOTAL SYNTHESIS OF (+ -)-PARVIFOLINE/, Phosphorus, sulfur and silicon and the related elements, 95-6(1-4), 1994, pp. 501-502
A new synthetic approach to medium-sized rings has been accomplished v
ia intramolecular cyclization of a sulfone-stabilized carbanion. This
strategy was applied to the total synthesis of (+/-)-parvifoline.