The Absolute Best Science Experiment for 12180-80-2

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One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, SDS of cas: 12180-80-2, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 12180-80-2, Name is 1,1′-Dibenzoylferrocene, molecular formula is C24H10FeO2

Asymmetric synthesis of planar chiral 2-mono- and 2,2?-disubstituted 1,1?-bisbenzoylferrocenes

An efficient and flexible asymmetric synthesis of planar chiral 2-mono- and 2,2?-disubstituted 1,1?-bisbenzoylferrocenes 4 and 6 is reported. Key step is a highly diastereoselective ortho-metalation of 1,1?-bisbenzoylferrocene 1 via the corresponding bis-SAMP-hydrazone 2 (de?96%), followed by trapping with various carbon, silicon, phosphorus and sulfur electrophiles. Cleavage of the monosubstituted hydrazones 3 led to monosubstituted ketones 4 (ee?98%). Further ortho-substitution of the hydrazones 3 afforded 2,2?-disubstituted hydrazones 5, which could be cleaved to disubstituted ferrocenyl diketones 6 (ee?99%). The new methodology allows a broad and flexible fine-tuning of ferrocenyl ligands desired in asymmetric catalysis. Ozonolysis or reductive hydrazone cleavage using TiCl3 or SnCl2 were the methods of choice to remove the auxiliary.

Asymmetric synthesis of planar chiral 2-mono- and 2,2?-disubstituted 1,1?-bisbenzoylferrocenes

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Reference£º
Iron Catalysis in Organic Synthesis | Chemical Reviews,
Iron Catalysis in Organic Synthesis: A Critical Assessment of What It Takes To Make This Base Metal a Multitasking Champion