作者:Robert Franzén、Yu Wang
DOI:10.1055/s-0031-1290607
日期:2012.4
A synthetic route for the preparation of 2-aryl-substituted chromans from commercially available starting materials and utilizing either a palladium- or copper-catalyzed intramolecular cyclization of aryl bromides is described. Chromans with stereocontrol at C-2 can thus be obtained via a palladium-catalyzed asymmetric allylic etherification procedure utilizing a chiral indole-phosphine oxazoline (IndPHOX) ligand.
描述了一种从商业可得的起始材料制备2-芳基取代的氢酮的合成路线,利用钯催化或铜催化的芳基溴化物的分子内环化反应。因此,可以通过钯催化的不对称烯丙基醚化程序,利用手性吲哚-膦-噁唑啉(IndPHOX)配体获得在C-2位具有立体控制的氢酮。