TANDEM ASYMMETRIC CYCLOPROPANATION COPE REARRANGEMENT - A HIGHLY DIASTEREOSELECTIVE AND ENANTIOSELECTIVE METHOD FOR THE CONSTRUCTION OF 1,4-CYCLOHEPTADIENES/
Hml. Davies et al., TANDEM ASYMMETRIC CYCLOPROPANATION COPE REARRANGEMENT - A HIGHLY DIASTEREOSELECTIVE AND ENANTIOSELECTIVE METHOD FOR THE CONSTRUCTION OF 1,4-CYCLOHEPTADIENES/, Journal of the American Chemical Society, 120(14), 1998, pp. 3326-3331
Decomposition of vinyldiazoacetates by rhodium(II) (N-dodecylbenzenesu
lfonyl)prolinate (Rh-2(S-DOSP)(4), 1) in the presence of dienes result
s in a direct and highly enantioselective method for the formation of
cis-divinylcyclopropanes. Combination of this process with a subsequen
t Cope rearrangement results in a highly enantioselective synthesis of
a variety of cycloheptadienes containing multiple stereogenic centers
.