126456-43-7, One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time.In a article, authors is Marques-Lopez, Eugenia, mentioned the application of 126456-43-7, Name is (1S,2R)-1-Amino-2,3-dihydro-1H-inden-2-ol, molecular formula is C9H11NO
Enhanced efficiency of thiourea catalysts by external Bronsted acids in the Friedel-Crafts alkylation of indoles
A novel study on the influence of external Bronsted acids on thiourea catalysts in the asymmetric Friedel-Crafts alkylation of indoles with nitroalkenes is reported. The final 3-substituted indole derivatives were synthesized with better results because of cooperative effects between the chiral thiourea and a Bronsted acid additive (1a¡¤HA). The effects of diverse catalysts, different acid additives, solvents, and temperatures in the reaction were also explored. The high reactivity and selectivity of the reaction is presumptively attributed to an appropriate assembly between the Bronsted acid and the thiourea structure, affording a more acidic and rigid catalytic complex. Copyright
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Reference£º
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis