UNIT4: Mechanisms and chemical reactions for aromatics – Flashcards
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What reaction converts a benzene into a nitro benzene
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Nitration
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What are the conditions and reagents of nitration
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Concentrated hno3 in Concentrated H2SO4 Below 55 degrees Under reflux
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What is the mechanism of nitration
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Electrophilic substitution
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What is the catalyst for nitration of benzene
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Concentrated sulphuric acid
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How can you make a phenyl amine
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Reduction of a nitrobenzene
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What are the two steps in the production of a phenyl amine
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Step 1: producing nitrobenzene Electrophile substitution/ nitration of benzene Step2: reduction of nitrobenzene to a phenyl amine
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State a purpose for the nitration of benzene and the use of the product
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Methyl benzene can be nitrated to form trinitrotoluene = TNT Which is an explosive
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What are the conditions and reagents of the reduction of a nitrobenzene
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Tin (Sn), concentrated HCl, NaOH (solution) Heated under reflux
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What are the steps involved in the actual reduction of the nitrobenzene
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(1) nitrobenzene compound is heated under reflux with the tin metal and concentrated HCl = forms a salt -- [C6H5NH3+Cl-] (2) an alakali (NaOH solution) is added to the salt to convert it into an aromatic amine = phenyl amine
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What is the mechanism for the reduction of a nitrobenzene
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There is no mechanism
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What mechanism converts a phenyl amine into an N substituted amide
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Addition-elimination
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What reagent is used to convert a phenyl amine into an N substituted amide
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Acyl chloride
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What would you use as your reagent if you wanted to convert phenyl amine into N- phenylethanamide
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Methyl chloride -- [CH3COCl]
