In section (ii) above an acetal group is present in the starting material. Give a general reaction equation to show how one might prepare an acetal group and state how, by manipulation of equilibria, one can either form, or hydrolyse an acetal under acidic conditions (mechanisms not required). (1). MgBr B (2) Work-up

In section (ii) above an acetal group is present in the starting material. Give a general reaction equation to show how one might prepare an acetal group and state how, by manipulation of equilibria, one can either form, or hydrolyse an acetal under acidic conditions (mechanisms not required). (1). MgBr B (2) Work-up

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

(b) Answer the following questions based on the compounds below. Jawab soalan berikut berdasarkan kepada sebatian di bawah. CI CI A в (i) Which compound has the higher boiling point? Explain. Sebatian manakah mempunyai takat didih yang lebih tinggi? Terangkan. (ii) Draw the SN2 mechanism for the reaction of compound A with sodium hydroxide, NaOH. Lukis mekanisma Sn2 bagi tindak balas antara sebatian A dengan natrium hidroksida, NaOH.
Q2) Write a reaction for the following, with explanation. part 1) Dimethyl ketone with Hydrogen cyanide (HCN) part2) Preparation of M. nitro chlorobenzene from benzene, using nitric acid Sulfuric acid, Chlorine, AICI, and any reagent you need. part3) Solvation of ethylene epoxide in acidic medium
(a) Tsomane and Nyiko were given a task of synthesising methylenecyclohexane 2. After a brief discussion with each other, Tsomane proposed Method A to synthesise 2 from cyclohexanone 1 while Nyiko proposed Method B that started from hydroxymethylcyclohexane 3. Each student believed that their proposed method is better than the other. (Scheme below) (1) 1 Ph THF A Ph Ph B H₂SO4 100 °C 3 OH What is the name of the reaction that is followed by reaction Method A?
(a) Tsomane and Nyiko were given a task of synthesising methylenecyclohexane 2. After a brief discussion with each other, Tsomane proposed Method A to synthesise 2 from cyclohexanone 1 while Nyiko proposed Method B that started from hydroxymethylcyclohexane 3. Each student believed that their proposed method is better than the other. (Scheme below) Ph THF A Ph Ph B H₂SO4 100 °C 3 OH (iii) In analysing both these methods, are there other possible alkene products other than methylenecyclohexane 2? Use mechanistic details to support your answer.
(i) The enolisation of ketone A can generate an equilibrium mixture of A and either enol B or enolate C. Give the structure of both B and C, and the mechanism for their formation from A under the given conditions. (ii) A HCI (cat.) NaOH (cat.) B с Draw the structure of the product obtained when A is dissolved in D3O*. Give a detailed mechanism to account for the structure you propose.
(a) Give the products of the phosphoric acid-catalyzed dehydration of 2-methylcyclohex-3- enol. Label the three products with major, minor, and trace amounts. OH H3PO4, heat (b) Describe the rule that is applied in the acid-catalyzed dehydration of 2-methylcyclohex-3- enol. Explain your answer based on the products formed.
Synthesize the following compound from benzonitrile (C6H5CN): Please don't provide hand written solution...
Choose the most appropriate reagent(s) to selectively reduce the ketone functional group to an alcohol in the following molecule: (a) NaBH4, then aqueous acid (b) LIAIH, then aqueous acid (c) H2NNH, then KOH, heat (d) H, Pd/C (e) none of (a), (b), (c) or (d) can be used a. b.
(a) Tsomane and Nyiko were given a task of synthesising methylenecyclohexane 2. After a brief discussion with each other, Tsomane proposed Method A to synthesise 2 from cyclohexanone 1 while Nyiko proposed Method B that started from hydroxymethylcyclohexane 3. Each student believed that their proposed method is better than the other. (Scheme below) (1) Ph Ph 8*8 Ph THF A 1 Santande B H₂SO4 100 °C 3 OH Using curly arrows, provide full mechanistic details accounting how methylenecyclohexane 2 was synthesised according to both Methods A and B.
(a) Tsomane and Nyiko were given a task of synthesising methylenecyclohexane 2. After a brief discussion with each other, Tsomane proposed Method A to synthesise 2 from cyclohexanone 1 while Nyiko proposed Method B that started from hydroxymethylcyclohexane 3. Each student believed that their proposed method is better than the other. (Scheme below) (1) Ph Ph 836 Ph THF A 1 B H₂SO4 100 °C 3 OH Which of the two methods (A or B) is more likely give high yield of methylenecyclohexane 2? Briefly explain.
Phenols are less acidic than carboxylic acids, with values of pKa around 10. Phenols aredeprotonated by (and therefore soluble in) solutions of sodium hydroxide but not by solutions of sodium bicarbonate. Explain how you would use extractions to isolate the three purecompounds from a mixture of p-cresol (p-methylphenol), cyclohexanone, and benzoic acid.
3. How would you separate these three molecules from one another utilizing acid/base extractions and ethyl acetate as your organic layer? You can use 10% HC1 (aq.), 10% NaOH (aq.), and 30% NaHCO3 (aq.) as your acids and bases. NH2 HO HO, OH OH ÓH OH