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- 31. Which mechanism is correct for the following intramolecular substitution reaction? (a) (b) (c) 4- H-N H H N: H H₂N N: он --مرح CI CI CI H H CI N: NaOH N: CI *H :OH -- NH NH CNH на он NH NHWhich of the following is a step in the mechanism of the hydrolysis of the ester shown below? (A) `CH, "OH `CH, OH HO OH (B) H,C `CH, H,C + CH,CH,0 -"OH (C) H, `CH, + CH,CH,OH о нн HO- (D) H,C- %3D CH, + H,0 CH, H,Ca) Complete the following reactions: (i) H3C-C-Ci + H2O A + B (ii) HO H;C. CH3 SOCI, с + D + so, (iii) H;O* HCN E F CH;CH, `CH;3 (iv) CH;CH,CH,CH,CH,Br + NH3 G + H excess
- Mechanism: A reaction mechanism for the following reaction is shown below. H+ CEN CEN: N-H || -C-OH H₂O, H* Step 1 wand woled mot ozsm E Step 3 N-H C-OH C=N-H Step2 C=N-H H-O-H H₂O motno vgiene fesrigid onlt to smotnos -C=N-H a) The overall reaction is an example of b) Step 1 is c) Step 3 is d) Draw in the curved arrows for each step. e) Identify the nucleophiles and electrophiles where appropriate. f) Fill in the reaction energy diagram. H₂O: rate determining step to noipojovo hamwell sit 5(emise erit voittons 10) vanas mi sdgin al rainW di of E^ reaction progress →Q1) suggest a suitable mechanisms for the following organic fon H₂O/H a) penta-1-ene sec-pentyl alcohol H₂SO₂ b) 4-methylpent-2-ene + Iso butane 2,4,5,7-tetramethyloctane FeCl, c) Benzoic acid + Cl₂ 3-Chloro Benzoic acid H₂SO d) cyclo pentanol. cyclo pentene e) nitrobenzene + HNO, H₂SO 1-3dinitrobenzeneProvide the product and mechanism for the reaction: ОН Cro, H,SO, H,0
- The following figure shows the energy profile of a nucleophilic substitution reaction. Potential energy :ÖH H HII.C H C-1 H HO--C---I HH Reaction coordinate H -CH HO–CHITH H + 1 According to this, it is correct to affirm: O The activation energy (4G°) shows that it is thermodynamically favorable. O Represents a reaction that occurs in one step where a pentavalent chemical species is formed. O The intermediate has lower energy than any transition state. O The formation of the intermediate releases energy and is therefore thermodynamically favourable.Identify the expected major product of the following electrocyclic reaction. → OI Oll O III OIV OV A ? KYYAK 8 +En ||| + En I || IV + En V10. What is the major organic product generated in the reaction below? HO HO 40||!!!!!! (A) OH ...... (B) 1) 03 2) (CH3)2S HO O (C) H НО. (D)
- 7A Write the possible products of the following reactions, the mechanism by which they were formed. mentioning Br CH3OH CH3ONa4. Outline a detailed mechanism for the reaction below. Identify the abbreviation for the reaction mechanism. НО H3PO4Add arrows to the following reaction to show the electron movement that identifies the mechanism for compound C in the following reaction: CH3 I H₂C-C-C1 1 CH₂ A H₂O ethanol CH3 | H₂C-C-OH 1 CH3 B + H3C H3C C=CH₂ C