953786-91-9Relevant academic research and scientific papers
Asymmetric intermolecular boron heck-type reactions via oxidative palladium(II) catalysis with chiral tridentate NHC-amidate-alkoxide ligands
Yoo, Kyung Soo,O'Neill, Justin,Sakaguchi, Satoshi,Giles, Richard,Lee, Joo Ho,Jung, Kyung Woon
experimental part, p. 95 - 101 (2010/04/04)
(Chemical Equation Presented) Chiral dimeric tridentate NHC-amidate-alkoxide palladium(II) complexes, 3a and 3b, effected oxidative boron Heck-type reactions of aryl boronic acids with both acyclic and cyclic alkenes at room temperature to afford the corresponding coupling products with high enantioselectivities. The high degree of enantioselection, far superior to existing methods, stems from differences in the nonbonding interactions in the proposed transition states, due to the influence from bulky substituents of the alkene substrates and the "counter axial groups" of the palladium(II) catalysts. 2009 American Chemical Society.
N-HETEROCYCLIC CARBENE-AMIDO PALLADIUM(II) CATALYSTS AND METHOD OF USE THEREOF
-
Page/Page column 5; 6, (2010/03/02)
A new N-heterocyclic catalyst system which contains N-heterocyclic carbene and amido as ligands, which are strongly bound to a palladium metal. Another heteroatom functionality can be used as a third ligand L. The NHC-amidate ligand system is unique in structure, and shows excellent reactivities in a number of chemical reactions. The chemical reactions include carbon-carbon and carbon-heteroatom (oxygen and nitrogen) bond formations, and oxidation reactions of saturated carbon chemicals via C—H activation.
Asymmetric intermodular heck-type reaction of acyclic alkenes via oxidative palladium(II) catalysis
Yoo, Kyung Soo,Park, Chan Pil,Yoon, Cheol Hwan,Sakaguchi, Satoshi,O'Neill, Justin,Jung, Kyung Woon
, p. 3933 - 3935 (2008/02/11)
Herein, we report an asymmetric intermolecular Heck-type reaction of acyclic alkenes by using a palladium-pyridinyl oxazoline diacetate complex under oxidative palladium(II) catalysis conditions. A premade palladium-ligand complex afforded higher enantioselectivities than a corresponding premixed palladium-ligand system, while offering enhanced asymmetric induction when compared to known intermolecular Heck-type protocols.
