Draw the structure of 'X' in the following reaction: a compound is treated with CrO3 to give 'X'.
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Solution and Explanation
Answer: Because the printed source does not show the structure of the starting compound, the exact product 'X' cannot be drawn here without inventing it. In general, with CrO3 a primary alcohol R-CH2-OH is oxidised to the carboxylic acid R-COOH, and a secondary alcohol is oxidised to a ketone. If the substrate is toluene (C6H5CH3) under CrO3/acetic anhydride (Etard-type/controlled) conditions, 'X' is benzaldehyde C6H5CHO. The structure of 'X' should be drawn once the starting reactant in the figure is confirmed.
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(ii) Ethylamine is soluble in water whereas aniline is not.
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What is meant by the following terms? Give an example of the reaction in each case.
\((i)\)\(Cyanohydrin\)
\((ii)Acetal \)
\((iii)Semicarbazone \)
\((iv)Aldol \)
\((v)Hemiacetal \)
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\((ii) CH_3CH_2CHBrCH_2CH(CH_3)CHO \)
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\((iv) Ph-CH=CH-CHO\)
\((v)\)
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