Nickel-Catalyzed Cross-Coupling of Dienyl Phosphates with Grignard Reagents in the Synthesis of 2-Substituted 1,3-Dienes
作者:A. Sofia. E. Karlström、Kenichiro Itami、Jan-E. Bäckvall
DOI:10.1021/jo982060h
日期:1999.3.1
Palladium(II)-Catalyzed Intramolecular 1,4-Oxyacyloxylation of Conjugated Dienes. A Stereocontrolled Route to Fused Six-Membered Lactones and Pyrans
作者:Renzo C. Verboom、B. Anders Persson、Jan-E. Bäckvall
DOI:10.1021/jo0357667
日期:2004.4.1
Stereocontrolledpalladium(II)-catalyzed intramolecular 1,4-oxidations of dienyl acids and alcohols proceed under mild conditions to give fused δ-lactones and pyrans, respectively, in good yields. The stereo- and regioselectivity was affected by the presence of LiCl and solvent composition (HOAc/acetone). The products obtained were used for further functionalizations using copper(I)-mediated reactions