Changing counterion can switch the preference for selective 1,2
... Many reactions take advantage of the coordinating ability of the functional groups on the arene to direct functionalization of adjacent positions. This is especially common for Pd-catalyzed reactions, where the directing group also helps stabilize high oxidation state intermediates. In the example b ...
... Many reactions take advantage of the coordinating ability of the functional groups on the arene to direct functionalization of adjacent positions. This is especially common for Pd-catalyzed reactions, where the directing group also helps stabilize high oxidation state intermediates. In the example b ...
Ion Exchange Resins: Catalyst Recovery and Recycle
... Due to the easier workup and integration in reactor equipments, the chemical industry has a strong preference for solid catalysts, which, however, usually do not provide selectivities (chemo, regio, or stereo) comparable to those observed in the homogeneous phase.17,18 There is therefore a clear nee ...
... Due to the easier workup and integration in reactor equipments, the chemical industry has a strong preference for solid catalysts, which, however, usually do not provide selectivities (chemo, regio, or stereo) comparable to those observed in the homogeneous phase.17,18 There is therefore a clear nee ...
Section 2 Hydrocarbons Chapter 22
... amount of hydrogen are referred to as unsaturated. • Unsaturated hydrocarbons are hydrocarbons in which not all carbon atoms have four single covalent bonds. • An unsaturated hydrocarbon has one or more double bonds or triple bonds between carbon atoms. • Carbon atoms can easily form multiple bonds ...
... amount of hydrogen are referred to as unsaturated. • Unsaturated hydrocarbons are hydrocarbons in which not all carbon atoms have four single covalent bonds. • An unsaturated hydrocarbon has one or more double bonds or triple bonds between carbon atoms. • Carbon atoms can easily form multiple bonds ...
Molecular Water Oxidation Catalysts for
... Molecular catalysts Molecular catalysts offer the prospect of specific tailoring of the atomic structure and composition without the constraints imposed by an extended solid lattice. Such catalysts could potentially lead to more efficient water oxidation as the O–H bond cleavage and O–O bond forming r ...
... Molecular catalysts Molecular catalysts offer the prospect of specific tailoring of the atomic structure and composition without the constraints imposed by an extended solid lattice. Such catalysts could potentially lead to more efficient water oxidation as the O–H bond cleavage and O–O bond forming r ...
Syntheses of Variations of Stereogenic-at
... Mo(NAd)(CHCMe2Ph)(ORF6)(HMT) (8) as a crystalline yellow solid. 4. Testing of the novel catalysts in ROMP ROMP polymerization of 2,3-dicarbomethoxynorbornadiene (DCMNBD) has been used as a test to determine whether a given catalyst can produce a polymer with a single structure. Among the tested cata ...
... Mo(NAd)(CHCMe2Ph)(ORF6)(HMT) (8) as a crystalline yellow solid. 4. Testing of the novel catalysts in ROMP ROMP polymerization of 2,3-dicarbomethoxynorbornadiene (DCMNBD) has been used as a test to determine whether a given catalyst can produce a polymer with a single structure. Among the tested cata ...
Design of Nanostructured Catalysts for H2 Production
... catalysts has a profound effect on the catalytic activity. A heterogeneous catalytic reaction begins with the adsorption of the reacting gases or liquids on the surface of the catalyst, where intramolecular bonds are broken or weakened. Next, the adsorbed species react on the surface, often in sever ...
... catalysts has a profound effect on the catalytic activity. A heterogeneous catalytic reaction begins with the adsorption of the reacting gases or liquids on the surface of the catalyst, where intramolecular bonds are broken or weakened. Next, the adsorbed species react on the surface, often in sever ...
9851a doc..9851a chapter .. Page97
... moisture level required, in this case by heating in vacuo at 70 °C for 24 h. TPAP catalysed oxidations with NMO as co-oxidant Investigations were initially conducted in the ionic liquid [bmim][BF4]. This ionic liquid was chosen because it is stable to air and moisture, as well as being simple and in ...
... moisture level required, in this case by heating in vacuo at 70 °C for 24 h. TPAP catalysed oxidations with NMO as co-oxidant Investigations were initially conducted in the ionic liquid [bmim][BF4]. This ionic liquid was chosen because it is stable to air and moisture, as well as being simple and in ...