Highly Enantioselective Cyclocarbonylation of Allylic
... Since BICP is one of the most effective chiral 1,4-bisphosphines, we chose to evaluate this ligand as it might meet the two primary requirements for achieving high enantioselectivity and activity in Pd-catalyzed cyclocarbonylation reactions: (1) conformational rigidity of Pd-bisphosphine complexes c ...
... Since BICP is one of the most effective chiral 1,4-bisphosphines, we chose to evaluate this ligand as it might meet the two primary requirements for achieving high enantioselectivity and activity in Pd-catalyzed cyclocarbonylation reactions: (1) conformational rigidity of Pd-bisphosphine complexes c ...
View/Open - Minerva Access
... charged metal carboxylates, formed via ESI of solutions of appropriate metal salts, can undergo decarboxylation under conditions of low-energy collision-induced dissociation (CID) to produce organometallic ions (eq. 5). These can be further mass selected for studies aimed at examining their unimolec ...
... charged metal carboxylates, formed via ESI of solutions of appropriate metal salts, can undergo decarboxylation under conditions of low-energy collision-induced dissociation (CID) to produce organometallic ions (eq. 5). These can be further mass selected for studies aimed at examining their unimolec ...
![Synthesis of [RuCl2(NO)2(THF)] and its Double CN BondForming](http://s1.studyres.com/store/data/001773792_1-763ad0089529123821e01ed17077bbf2-300x300.png)
Synthesis of [RuCl2(NO)2(THF)] and its Double CN BondForming
... investigation, methods for controlling the reactivity of nitric oxide at transition-metal centers have received considerably less attention.[1–3] For example, the migratory insertion of NO into metal–alkyl or metal–aryl bonds has been observed in only a handful of metal complexes,[3] despite the ana ...
... investigation, methods for controlling the reactivity of nitric oxide at transition-metal centers have received considerably less attention.[1–3] For example, the migratory insertion of NO into metal–alkyl or metal–aryl bonds has been observed in only a handful of metal complexes,[3] despite the ana ...
Hydroxyl-Directed Stereoselective Diboration of Alkenes
... the amount of B2(pin)2 employed but still obtain complete conversion in a reasonable time frame, the reaction was run at a increased substrate concentration (0.5 M). After 12 h at 70 °C, followed by oxidative workup, triol 2 was obtained in 84% yield and as a 17:1 mixture of syn:anti diastereomers. ...
... the amount of B2(pin)2 employed but still obtain complete conversion in a reasonable time frame, the reaction was run at a increased substrate concentration (0.5 M). After 12 h at 70 °C, followed by oxidative workup, triol 2 was obtained in 84% yield and as a 17:1 mixture of syn:anti diastereomers. ...
Heterogeneous Catalysis and Solid Catalysts
... This can take place in a homogeneous or heterogeneous system. One example is the utilization of semiconductor catalysts (titanium, zinc, and iron oxides) for photochemical degradation of organic substances, e.g., on selfcleaning surfaces. In biocatalysis, enzymes or microorganisms catalyze various b ...
... This can take place in a homogeneous or heterogeneous system. One example is the utilization of semiconductor catalysts (titanium, zinc, and iron oxides) for photochemical degradation of organic substances, e.g., on selfcleaning surfaces. In biocatalysis, enzymes or microorganisms catalyze various b ...
Ligand-Based CarbonАNitrogen Bond Forming Reactions of Metal
... nitroso group. This conjugate anion of metal dinitrosoalkanes can participate in conjugate addition to Michael acceptors to form new carboncarbon bonds. These functionalized cobalt complexes can further react through alkene exchange to furnish the overall vinylic CH functionalized organic product. ...
... nitroso group. This conjugate anion of metal dinitrosoalkanes can participate in conjugate addition to Michael acceptors to form new carboncarbon bonds. These functionalized cobalt complexes can further react through alkene exchange to furnish the overall vinylic CH functionalized organic product. ...
Ir-catalysed formation of C− F bonds. From allylic alcohols to α
... Since SelectF in THF/water mixtures successfully produced only one constitutional isomer of the product (i.e. 2a 0 was not formed), further screening on this system was performed (Table 2). The best results were obtained using a THF/water mixture of 5 : 1. Less water failed to dissolve SelectF, and ...
... Since SelectF in THF/water mixtures successfully produced only one constitutional isomer of the product (i.e. 2a 0 was not formed), further screening on this system was performed (Table 2). The best results were obtained using a THF/water mixture of 5 : 1. Less water failed to dissolve SelectF, and ...
Applications of trivalent and pentavalent tantalum in organic synthesis
... saturation) whereas metal/NH3 reduction generally yields the E-olefin. Low valent tantalum produced from TaC15-Zn which is much faster than analogues NbC15-Zn for complexation with acetylene after basic hydrolysis with H20/(NaOH) furnished the protonated olefin in good yields with more than 99% Z se ...
... saturation) whereas metal/NH3 reduction generally yields the E-olefin. Low valent tantalum produced from TaC15-Zn which is much faster than analogues NbC15-Zn for complexation with acetylene after basic hydrolysis with H20/(NaOH) furnished the protonated olefin in good yields with more than 99% Z se ...
