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- (b) The activating and deactivating groups could affect the position(s) of the next incoming group(s) to the benzene ring. Based on the structure below, analyze and explain the group(s) on the benzene ring is activating or deactivating group. Then, identify the product(s) formed from the following reactions. NH, CC, CH;CH,COCI AICI, (i) NH, HNO, H,SO, (ii) H Br AICI, (iii) Page 3 of 4True or False1. The solubity of monocarboxylic acid in water increases as the alkyl chain increases in length2. The resulting iodinated aspirin has a higher Rf compared to aspirin after visualizing with ferric chloride3. Substitution reactions do not occur in aromatic rings because of pi-electron delocalizationQ3\ The pKa of p-cyclopropylbenzoic acid is 4.45. Is cyclopropylbenzene likely to be more reactive or less reactive than benzene toward electrophilic bromination? Explain.
- Determine whether each of the following syntheses requires a reaction that alters the carbon skeleton. (a) (b) OH (c) (d) OCH,CH3 CH3 (e) OH (f) H,CO он H;CO. (g) H3CO, (h) H3CO. NO2 NO2Draw structures of the following derivatives. ) the (E) isomer of the ethyl imine of propiophenone (h) the hemiacetal form of 5-hydroxypentanal1. Give the IUPAC name for the compounds shown below. (e) (a) (ع) کے H3C. 5 14 6 3 OCH₂ will (f) 2 (b) (d) (h) Br لكم Cl ОН
- QUESTION 3 (a) Draw the orbital representation of imidazole. Briefly explain why imidazole is aromatic with particular reference to the nitrogen atom (s). (b) (c) 9 HN- 10 7 i) PhLi ii) (CH3)2CO iii) H3O* NH 5.2 Protonated triethylamine, pyridine, imidazole and pyrrole have pka values 9, 7, 5.2, -4.0, respectively. Give a clear explanation for the observed values. H,CO, Me,NH, HOẶC Draw chemical mechanisms for the reactions below, including structures for the respective products G and H. NH G -NH₂ HPlease complete the following question. There is no need to provide an explaination. 5Organize the carboxylic acid derivatives below in order of decreasing reactivity. (most reactive > > least reactive)