Catalytic studies of cyclometalated gold(III) complexes and their related UiO-67 MOF
作者： Volodymyr A. Levchenko , Huey-San Melanie Siah , Sigurd Øien-Ødegaard , Gurpreet Kaur , Anne Fiksdahl
DOI: 10.1016/J.MCAT.2020.111009
关键词:
摘要: Abstract Cyclometalated gold(III) complexes Au(L)(OAcF)2 (L = phenylpyridine dicarboxylic diester (ppyde) or phenylpyridine acid (ppydc)) have been prepared reacting Au(OAc)3 with corresponding phenyl pyridines (ppyde ppydc) in trifluoroacetic (HOAcF) under microwave heating. Further treatment of aqua regia resulted dichloro Au(L)Cl2. Au-functionalized UiO-67 MOF has synthesized by exchanging linkers Au(ppydc)Cl2, furnishing the (N^C)-cyclometalated Au(III) centers. The catalytic activities molecular cyclometalated and Au-incorporated were studied gold-catalyzed propargyl ester cyclopropanations. Almost all showed activity to cyclopropanation product (up 97% conversion), a preference for trans diastereoisomer 14:86 d.r.). recyclability most active complex also investigated.
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