PI-FACE DIFFERENTIATION IN MICHAEL REACTION TO THE ENONE GROUP ADJACENT TO THE (ETA-C5H5)MO(CO)2(PI-ALLYL) FRAGMENT - A NEW APPROACH TO THESTEREOSELECTIVE SYNTHESIS OF 2,3,4,5-TETRASUBSTITUTED-TETRAHYDROFURANCOMPOUNDS
Sh. Lin et al., PI-FACE DIFFERENTIATION IN MICHAEL REACTION TO THE ENONE GROUP ADJACENT TO THE (ETA-C5H5)MO(CO)2(PI-ALLYL) FRAGMENT - A NEW APPROACH TO THESTEREOSELECTIVE SYNTHESIS OF 2,3,4,5-TETRASUBSTITUTED-TETRAHYDROFURANCOMPOUNDS, Journal of the Chemical Society, Chemical Communications, (18), 1993, pp. 1391-1393
The stereochemical outcome of the 1,4-addition of organocopper reagent
s to (eta-C5H5)Mo(CO)2[eta3-1-(E)-C3H4COCH=CHR] compounds has been elu
cidated; utilization of this reaction for synthesis of 2,3,4,5-tetrasu
bstituted tetrahydrofuran is demonstrated.