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Questions and Answers
What is the chemical equation for the reaction of benzene with carbon monoxide and hydrogen chloride in the presence of anhydrous AlCl3 / CuCl?
What is the chemical equation for the reaction of benzene with carbon monoxide and hydrogen chloride in the presence of anhydrous AlCl3 / CuCl?
C6H6 + CO + HCl -> C6H5CHO + H2O
What is the chemical equation for the reaction of an alkyl or aryl cyanide with tin(II) chloride and hydrochloric acid followed by hydrolysis?
What is the chemical equation for the reaction of an alkyl or aryl cyanide with tin(II) chloride and hydrochloric acid followed by hydrolysis?
RCN + SnCl2 + HCl -> RCH=NH -> RCHO
What is the chemical equation for the reduction of an acid chloride with diisobutylaluminium hydride (DIBAL-H) followed by hydrolysis?
What is the chemical equation for the reduction of an acid chloride with diisobutylaluminium hydride (DIBAL-H) followed by hydrolysis?
R-COCl + DIBAL-H -> R-CH=O
State the type of reaction used in the Rosenmund reaction, along with the reagent used.
State the type of reaction used in the Rosenmund reaction, along with the reagent used.
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Study Notes
Gattermann-Koch Reaction
- Benzene reacts with carbon monoxide and hydrogen chloride in the presence of anhydrous aluminum chloride/copper chloride to form benzaldehyde or substituted benzaldehydes.
Stephen Reaction
- Alkyl or aryl cyanides in ethereal solution are reduced with stannous chloride and hydrochloric acid. This forms an intermediate, which is then hydrolyzed with water to produce aldehydes.
Rosenmund Reduction
- Acyl chlorides are reduced to aldehydes using hydrogen gas in the presence of palladium on barium sulfate (Pd/BaSO4) catalyst. This reaction is carried out in xylene.
- Different acyl chlorides (CH₃COCl, C₆H₅COCl) produce the corresponding aldehydes (CH₃CHO, C₆H₅CHO).
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Description
This quiz covers key reduction reactions leading to aldehyde formation, including the Gattermann-Koch Reaction, Stephen Reaction, and Rosenmund Reduction. Test your understanding of the mechanisms and reactants involved in these important organic chemistry processes.
