Preparation of indole-phosphine oxazoline (IndPHOX) ligands and their application in allylic alkylation
作者:Yu Wang、Antti Hämäläinen、Jan Tois、Robert Franzén
DOI:10.1016/j.tetasy.2010.08.008
日期:2010.10
starting materials in good overall yields. These modular ligands include an indole skeleton with either a phosphine moiety or an oxazoline ring at the 2- or 3-position, respectively. The utility of these ligands was demonstrated in a catalytic asymmetric reaction: the palladium-catalyzed allylic alkylation of 1,3-diphenyl-2-propenyl acetate with dimethyl malonate was performed with enantioselectivities as
从易于获得的起始原料以良好的总收率制备了两类吲哚-膦恶唑啉配体。这些模块化配体包括在2-或3-位分别具有膦部分或恶唑啉环的吲哚骨架。这些配体的效用在催化不对称反应中得到了证明:1,3-二苯基-2-丙烯基乙酸乙酸酯与丙二酸二甲酯的钯催化烯丙基烷基化反应的对映选择性高达98%。