-.beta.-cuparenone. Conjugate addition of organozinc reagents Journal of Organic ChemistryGreene,A.E,Lansard,J.-P,Luche,J.-L,Petrier,C.Efficient syntheses of(±)-β-cuparenone.Conjugate addition of organozinc reagents. Journal of Organic Chemistry . 1984... AE Greene,JP Lansard,JL Luche...