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- E. TESTS FOR PHENOLIC COMPOUNDSPhenolic compounds such as phenol, salicylic acid, etc., give characteristiccolors with FeCl3 and Millon’s Reagent.1. Ferric Chloride TestAdd 5 drops of FeCl3 solution to 4 different test tubes containing 1 mL each ofdilute solutions of the following compounds and note the color obtained.a. Phenol _______________________________________________________________b. Salicyclic acid ___________________________________________________________c. Resorcinol _______________________________________________________________d. Picric acid _______________________________________________________________2. Millon’s TestPrepare another set of 4 test tubes containing 1 mL each of the solutions listedbelow. Add 3 drops of Millon’s reagent to each and place all the test tubes in aboiling water bath. Note the color formed.a. Phenol _______________________________________________________________b. Salicylic acid ___________________________________________________________c.…(a) Illustrate the following name reactions by giving example :(i) Cannizzaro’s reaction(ii) Clemmensen reduction(b) An organic compound A contains 69.77% carbon, 11.63% hydrogen and rest oxygen. The molecular mass of the compound is 86. It does not reduce Tollen’s reagent but forms an addition compound with sodium hydrogen sulphite and gives positive iodoform test. On vigorous oxidation it gives ethanoic and propanoic acids. Derive the possible structure of compound A.Explain the experimental procedure of the laboratory preparation of the synthesis of Aniline from benzoic acid. (paragraph form) Explain the chemistry behind the synthesis of Aniline from benzoic acid. (paragraph form)
- (A).Calculate the theoretical mass of NaBH4 needed to reduce 100mg of benzil to (+) -benzoin. (B). Calculate the theoretical mass of benzil that can be reduced to hydrobenzoin using 100mg of NaBH4.Why does benozic acid dissolve in toulene but not hexane?Benzene is often produced as a side product during Grignard reactions using phenylmagnesium bromide. How can its formation be explained? Give a balanced equation for its formation.
- a) Write a description of the compounds involved in the synthesis (functional groups, specific features). b) Describe the steps involved in the synthesis and the role of each step. Each step should clearly indicate the reagent used, the stereochemistry involved in the reaction and its importance or relevance to the multistep synthesis.a) Discuss all the principles that can be used to facilitate acylation reactions. b) Why do aldehydes and ketone undergo addition not substitution reaction? c) What are the disadvantages of carboxylic acid activation using anhydride and also using thionyl chloride (SOCl2) as a reagent?Explain the general procedure for the laboratory preparation of the synthesis of Aniline from benzoic acid. (paragraph form) Explain the chemistry behind the synthesis of Aniline from benzoic acid. (paragraph form)
- In the reaction between phenyl magnesium bromide (grignard) and phosphorous tribromide to form triphenylphosphine. Which reagent acts as the limiting reagent and why?Propose a high yield laboratory synthesis of β-bisabolene from starting materials of five carbons or lessGive the structure of the product omitted