Lab 5 - Acetylferrocene_10

Lab 5 - Acetylferrocene_10 -...

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 Friedel-Crafts Acylation of Ferrocene Adapted from Williamson, K. L., “Friedel-Crafts Acylation of Ferrocene: Acetylferrocene,”  Macroscale and  Microscale Organic Experiements, 2 nd  Ed. 1994 , pp481. Key Concepts/Definitions Thin Layer Chromatography (TLC)  - the science of separating molecules utilizing a Stationary  Phase that is applied onto a plate which uses the capillary action of the Mobile Phase to move  molecules up a 2D plate. Recrystallization   – a  process in which  a  crystalline material   dissolves in a  hot  solvent , then  returns to a solid again by  crystallizing in the cooled solvent Melting Point  – the temperature at which a solid changes to a liquid at a given pressure. Melting Point Suppression  – the phenomenon where the melting temperature observed is less  than  anticipated, most  often  due  to  a  contamination  of the  compound  with  either  water  or  another impurity. Filtration  – a common technique used for  separating a solid compound from a solvent . This can  be done to separate solid impurities from a reaction solution, or to remove a solid product from a  solution (i.e. after recrystallization). Vacuum Drying of Organic Solids   – a  technique  where air passes through  the  solid, in the  filtering apparatus for a few minutes. Fe + H 3 C O CH 3 O O Ferrocene Acetic Anhydride Fe + CH 3 O H 3 C OH O Acetylferrocene Acetic Acid H 3 PO 4 heat To a 50 mL round-bottom flask add approximately 1 g ferrocene and 5 mL acetic anhydride. Slowly add 
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This note was uploaded on 06/28/2010 for the course CHEM 258 taught by Professor Taylor during the Spring '10 term at Wesleyan.

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Lab 5 - Acetylferrocene_10 -...

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