Treatment of 2-phenylethanoic acid with alcohol U gives an ester V with molecular formula of CH1402. Alcohol U reacts with alkaline iodine solution to form a yellow precipitate W, whereas oxidation of U yields X. Pengolahan asid 2-feniletanoik dengan alkohol U memberikan suatu ester V dengan formula molekul CH14O2. Alkohol U bertindak balas dengan larutan iodin beralkali membentuk suatu mendakan kuning W, manakala pengoksidaan U menghasilkan X. (a) (i) Draw the structures for U, V and X. Lukis struktur bagi U, V dan X. (ii) Write all chemical equations involved. Tulis semua persamaan kimia yang terlibat. (iii) Give the IUPAC name of W. Beri nama IUPAC bagi W. (b) Explain why methanoic acid gives a positive test towards Tollens' reagent but ethanoic acid does not. Write the equation for this reaction.

Treatment of 2-phenylethanoic acid with alcohol U gives an ester V with molecular formula of CH1402. Alcohol U reacts with alkaline iodine solution to form a yellow precipitate W, whereas oxidation of U yields X. Pengolahan asid 2-feniletanoik dengan alkohol U memberikan suatu ester V dengan formula molekul CH14O2. Alkohol U bertindak balas dengan larutan iodin beralkali membentuk suatu mendakan kuning W, manakala pengoksidaan U menghasilkan X. (a) (i) Draw the structures for U, V and X. Lukis struktur bagi U, V dan X. (ii) Write all chemical equations involved. Tulis semua persamaan kimia yang terlibat. (iii) Give the IUPAC name of W. Beri nama IUPAC bagi W. (b) Explain why methanoic acid gives a positive test towards Tollens' reagent but ethanoic acid does not. Write the equation for this reaction.

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter21: Carboxylic Acid Derivatives: Nucleophilic Acyl Substitution Reactions

Section21.SE: Something Extra

Problem 75AP: One frequently used method for preparing methyl esters is by reaction of carboxylic acids with...

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