Enantioselective Gold-Catalyzed Allylic Alkylation of Indoles with Alcohols: An Efficient Route to Functionalized Tetrahydrocarbazoles
作者:Marco Bandini、Astrid Eichholzer
DOI:10.1002/anie.200904388
日期:2009.12.7
Breaking the taboo: The direct use of allylic alcohols in catalytic and enantioselective Friedel–Crafts alkylation is described for the first time in the presence of chiral gold complexes. This intramolecular Friedel–Crafts reaction was used to prepare a broad range of functionalized tetrahydrocarbazoles (see scheme; X=Me, F, Br, Cl, OMe; R=Me, Et, tBu; R′=H, Me).
打破禁忌:在手性金配合物的存在下,首次首次描述了在催化和对映选择性的Friedel-Crafts烷基化反应中直接使用烯丙醇。该分子内Friedel-Crafts反应用于制备范围广泛的官能化四氢咔唑(参见方案; X = Me,F,Br,Cl,OMe; R = Me,Et,t Bu; R'= H,Me)。