6) If you are given a mixture consisting of following 3 compoünds components by solvent extraction method ÇOOH NH2 (C) Benzene m14 Ouclonentadiene-1-carboxylic acid
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- (b) State the reagents needed to convert benzoic acid into the following compounds. (i) C6H§COCI (ii) C,H$CH2OH (iii) C6H$CONHCH3Which of the following compounds are suitable solvents for Grignard reactions?(a) n-hexane (b) CH3¬O¬CH3 (c) CHCl3(d) cyclohexane (e) benzene (f) CH3OCH2CH2OCH3Write a structural formula for each of the following compounds: (a) m-Chlorobenzoyl chloride (b) Trifluoroacetic anhydride (c) cis-1,2-Cyclopropanedicarboxylic anhydride (d) Ethyl cycloheptanecarboxylate (e) 1-Phenylethyl acetate (f) 2-Phenylethyl acetate (g) p-Ethylbenzamide (h) N-Ethylbenzamide (i) 2-Methylhexanenitrile
- Which of the following reactions will synthesize phenol from benzene? 1) HNO3 + H2SO4; 2) Fe, HCl; 3) NaNO2, HCl, 0-10 oC; 4) warm H2SO4 and H2O 1) HNO3 + H2SO4; 2) Fe, HCl; 3) NaNO2, HCl, 0-10 oC; 4) CuCN; 5) dilute acid and heat 1) Acetyl chloride & AlCl3; 2) bleach 1) Ph-N2+ + KI; 2) BrMgCH=CH2 in ether, followed by H3O+; 3) warm, conc'd KMnO4 1) Cl-CH(CH3)-CH2CH2CH3 + FeBr3; 2) hot, conc'd KMnO4Predict the products of the following acid-base reactions. If the equilibrium would not result in the formation of appreciable amounts of products, you should so indicate. In each case label the stronger acid, the stronger base, the weaker acid, and the weaker base: (a) CH3CH=CH2 + NANH2 (d) CH3C=C: + CH;CH2OH → (e) CH3C=C:- + NH¾CI – | (b) CH;C=CH + NaNH2 (c) CH3CH2CH3 + NANH2 → | HAS(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) (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.16-57 Starting with either benzene or toluene, how would you synthesize the following substances? Assume that ortho and para isomers can be separated. (a) 2-Bromo-4-nitrotoluene (c) 2,4,6-Tribromoaniline (b) 1,3,5-Trinitrobenzene (d) m-Fluorobenzoic acidShow how you would use extractions with a separatory funnel to separate a mixture of the following compounds: benzoicacid, phenol, benzyl alcohol, aniline
- Predict the products formed when cyclohexanecarbaldehyde reacts with the following reagents.(a) PhMgBr, then H3O+ (b) Tollens reagent (c) semicarbazide and weak acid(d) excess ethanol and acid (e) propane-1,3-diol, H+ (f) zinc amalgam and dilute hydrochloric acidESTIONS Predict the product formed in each of the following reactions and give each reactant and product a suitable name: 1) ether MgBr + CO₂ 2) H+ (a) (b) MO + D₂O MgBr 1) ether 2) H+ 1) ether 2) H+ (c) + CH2O MgBr (d) PhMgBr + =0 1) ether 2) H+ LaborPredict the major products formed when benzene reacts (just once) with the following reagents. (a) 1-chloro-2,2-dimethylpropane + AlCl3 (b) benzoyl chloride + AlCl3 (c) iodine + HNO3 (d) nitric acid + sulfuric acid(e) carbon monoxide, HCl, and AlCl3 >CuCl (f) CH2(COCl)2, AlCl3