Application of 1273-94-5, Chemistry is the science of change. But why do chemical reactions take place? Why do chemicals react with each other? The answer is in thermodynamics and kinetics.In a document type is Article, and a compound is mentioned, 1273-94-5, 1,1′-Diacetylferrocene, introducing its new discovery.
A flexible approach to strained sandwich compounds: Chiral [1]ferrocenophanes with boron, gallium, silicon, and tin in bridging positions
The enantiomerically pure dibromoferrocene 3 [(Sp,S p)-1,1?-dibromo-2,2?-di(isopropyl)ferrocene], equipped with two iPr groups in alpha positions, was prepared using known “Ugi amine” chemistry. Species 3 was targeted in order to gain access to new [1]ferrocenophanes ([1]FCPs) to be used as monomers for ring-opening polymerization. The iPr groups on the sandwich unit were introduced to stabilize bridging moieties, as well as to increase solubilities of targeted metallopolymers. The planar chiral dibromide 3 can quantitatively be lithiated at 0 C [2 equiv nBuLi, hexanes/thf (9:1), 30 min]. Salt-metathesis reactions with respective element dichloride species gave chiral [1]FCPs with a variety of bridging moieties [ERx=Ga[2-(Me2NCH 2)C6H4] (4 a), SiMe2 (4 b), SntBu2 (4 c), BNiPr2 (4 d)]. The new [1]FCPs were fully characterized including single-crystal X-ray analysis. The stabilizing iPr groups on the Cp rings increase the thermal stabilities of 4 b-d compared to known [1]FCPs, equipped with the same bridging moieties. All three compounds 4 b-d are volatile and could be isolated by vacuum sublimation. Our new approach to [1]FCPs has the potential to overcome many of the existing difficulties in ferrocenophane chemistry, such as limited stability of starting monomers and low solubilities of resulting polyferrocenes. Closing the gap: The preparation of [1]ferrocenophanes with a variety of bridging elements was accomplished by using chiral ferrocene derivatives (see scheme). The isopropyl groups on the sandwich unit serve as protective and solubilizing moieties. The new synthetic approach is superior to the common synthesis of [1]ferrocenophanes, when dilithioferrocene-tmeda is used as the starting material. Copyright
A flexible approach to strained sandwich compounds: Chiral [1]ferrocenophanes with boron, gallium, silicon, and tin in bridging positions
Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Application of 1273-94-5. In my other articles, you can also check out more blogs about 1273-94-5
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