Pd(0)-Catalyzed Hydrogenolysis of Allylic and Dienylic Cyclic Carbonates: Synthesis of Optically Active Homoallylic Alcohols and Allylic Alcohols
作者:Suk-Ku Kang、Dong-Chul Park、Ho-Sik Rho、Chan-Mo Yu、Jang-Hoo Hong
DOI:10.1080/00397919508010808
日期:1995.1
Abstract Treatment of chiral allyliccycliccarbonates with ammonium formate in the presence of Pd(0) catalyst afforded optically active homoallylic alcohols with excellent regioselectivity. However, hydrogenolysis of dienyliccycliccarbonates in the presence of Pd(0) catalyst afforded conjugated or nonconjugated (E)-dienylic alcohols depending on Pd complexes used. Using homoallylic alcohol 3c as
Regioselective addition of organocopper-magnesium reagents to chiral dienylic cyclic carbonates
作者:Suk-Ku Kang、Dong-Gyu Cho、Jea-Uk Chung、Dae-Yeun Kim
DOI:10.1016/s0957-4166(00)80475-9
日期:1994.1
Reaction of chiral dienyliccycliccarbonates with dialkylcopper-magnesium complex R2CuMgX (RMgX: CuI=2: 1)BF3·OEt2 in THF at −78 °C for 30 min afforded γ-alkylated (E)-allylic alcohols with excellent regioselectivity and diastereoselectivity.
Ru-Catalyzed Hydrogenolysis of Chiral Allylic and Propargylic Cyclic Carbonates: Synthesis of Optically Active (<i>E</i>)-Allylic and Allenic Alcohols
作者:Suk-Ku Kang、Dae-Yeun Kim、Ho-Sik Rho、Seung-Hyun Yoon、Pil-Su Ho
DOI:10.1080/00397919608003514
日期:1996.4
cleavage reactions of chiral allylic cyclic carbonates with ammonium formate afforded optically active (E)-allylic alcohols with excellent regioselectivity. Alternatively, hydrogenolysis of propargylic cyclic carbonates in the presence of RuH2(PPh3)4 catalyst afforded allenicalcohols as a sole products.