1345876-83-6Relevant academic research and scientific papers
Composite polymer/oxide hollow fiber contactors: Versatile and scalable flow reactors for heterogeneous catalytic reactions in organic synthesis
Moschetta, Eric G.,Negretti, Solymar,Chepiga, Kathryn M.,Brunelli, Nicholas A.,Labreche, Ying,Feng, Yan,Rezaei, Fateme,Lively, Ryan P.,Koros, William J.,Davies, Huw M. L.,Jones, Christopher W.
, p. 6470 - 6474 (2015)
Flexible composite polymer/oxide hollow fibers are used as flow reactors for heterogeneously catalyzed reactions in organic synthesis. The fiber synthesis allows for a variety of supported catalysts to be embedded in the walls of the fibers, thus leading
D 2-symmetric dirhodium catalyst derived from a 1,2,2-triarylcyclopropanecarboxylate ligand: Design, synthesis and application
Qin, Changming,Boyarskikh, Vyacheslav,Hansen, Jorn H.,Hardcastle, Kenneth I.,Musaev, Djamaladdin G.,Davies, Huw M. L.
supporting information; experimental part, p. 19198 - 19204 (2012/01/05)
Dirhodium tetrakis-(R)-(1-(4-bromophenyl)-2,2- diphenylcyclopropanecarboxylate) (Rh2(R-BTPCP)4) was found to be an effective chiral catalyst for enantioselective reactions of aryl- and styryldiazoacetates. Highly enantioselective cyclopropanations, tandem cyclopropanation/Cope rearrangements and a combined C-H functionalization/Cope rearrangement were achieved using Rh2(R-BTPCP)4 as catalyst. The advantages of Rh2(R-BTPCP)4 include its ease of synthesis, its tolerance to the size of the ester group in the styryldiazoacetates, and its compatibility with dichloromethane as solvent. Computational studies suggest that the catalyst adopts a D2-symmetric arrangement, but when the carbenoid binds to the catalyst, two of the p-bromophenyl groups on the ligands rotate outward to make room for the carbenoid and the approach of the substrate to the carbenoid.
