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- A compound of molecular formula C5H10O forms a yellow precipitate with 2,4-dinitrophenylhydrazine reagent and a yellow precipitate with reagents for the iodoform test. a) Draw the structural formulae b) Name the two (2) compounds that fit these tests.The reaction between propanoic acid and benzylalcohol in an acidic medium. show the product by writing the reaction together with its mechanism.The odor of ripe bananas and many other fruits is due to the presence of esters. For example: Banana oil (isopentyl acetate) (a) Write the name (common or IUPAC) of the ester responsible for the fragrance of the following: pineapple, orange, apple, peach, & lavender (b) Choose one fragrant from (a) and name the alcohol and the carboxylic acid needed to synthesize this ester. (c) Show the detailed mechanism of the Fischer Esterification reaction that will be involved in the synthesis of the fragrant you have chosen in part (a).
- Write 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-Methylhexanenitrile2) Cinnamaldehyde is one of the primary constituents of cinnamon oil and contributes significantly to the odor of cinnamon. Starting with benzaldehyde and using any other necessary reagents, show how you might prepare cinnamaldehyde. Give your answer as a scheme. Ay H cinnamaldehyde(b) Compound AA has a molecular formula of CsH&O and gives a positive result using Tollen's reagent. The reaction of compound AA with hot acidified potassium permanganate, KMNO4 gives compound BB. The catalytic hydrogenation of compound AA with nickel, Ni produced compound Cc. The reaction of compound BB with ethanamine, CH:CH2NH2 produces compound DD. Sebatian AA mempunyai formula molekul C3He0 dan memberikan keputusan yang positif menggunakan reagen Tollen. Tindak balas sebatian AA dengan larutan panas kalium permanganat, KMNO4 berasid menghasilkan sebatian BB. Penghidrogenan bermangkin bagi sebatian AA dengan nikel, Ni menghasilkan sebatian CC. Tindak balas sebatian BB dengan etanamina, CH3;CH2NH2 menghasilkan sebatian DD. (1) Draw the structural formula of compounds AA, BB, CC and DD. Lukiskan formula struktur bagi sebatian AA, BB, CC dan DD. (i) Name the type of chemical reaction for the formation of compound CC. Namakan jenis tindak balas kimia bagi penghasilan sebatian Cc.
- Following is the structural formula of the tranquilizer meparfynol (Oblivon). Propose a synthesis for this compound starting with acetylene and a ketone. (Notice the -yn- and -ol in the chemical name of this compound, indicating that it contains alkyne and hydroxyl functional groups.)Compound AA has a molecular formula of C3H6O and gives a positiveresult using Tollen’s reagent. The reaction of compound AA with hotacidified potassium permanganate, KMnO4 gives compound BB. Thecatalytic hydrogenation of compound AA with nickel, Ni producedcompound CC. The reaction of compound BB with ethanamine,CH3CH2NH2 produces compound DD I) Draw the structural formula of compounds AA, BB, CC and DD. 2)Name the type of chemical reaction for the formation of compound CC.Write chemical equations expressing each of the following: (a) Preparation of o-nitrophenyl acetate by sulfuric acid catalysis of the reaction between a phenol and an acid anhydride. (b) Esterification of 2-naphthol with acetic anhydride in aqueous sodium hydroxide (c) Reaction of phenol with benzoyl chloride
- (a) Although phenoxide ion has more number of resonating structures than carboxylate ion, carboxylic acid is a stronger acid than phenol. Give two reasons.(b) How will you bring about the following converstions?(i) Propanone to propane (ii) Benzoyl chloride to benzaldehyde(iii) Ethanal to but-2-enalAn amine of unknown structure contains one nitrogen and nine carbon atoms, as well as at least one six-membered ring. The 13C-NMR spectrum shows only five signals, all between 20 and 60 ppm. Three cycles of Hofmann elimination sequence (1. CH3I, 2. Ag20, H20, 3. Heat) give trimethylamine and 1,4,8-nonatriene. Propose a structural formula for the amine. Justify your answer.Draw a structural formula for the product formed by treating butanal with each reagent. (a) LiA1H4LiA1H4 followed by H2OH2O (b) NaBH4NaBH4 in CH3OH/H2O (c) H2/Pt (d) Ag(NH3)2+in NH3/H2O (e) H2CrO4, heat (f) HOCH2CH2OH,HCl