Which of the following represents a step in the mechanism for the alkoxymercuration of 1-methylcyclopentene in methanol? с View Available Hint(s) OA OB с O Hg(OA) O B D H₂OA H₂ (OA)
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- 5. Consider the synthesis of 2-butanone from butyne: Hg2+ || CH3CH,-C=C–H CH;CH,-Ĉ-CH3 H3o* (iv) Name the class of compound D belongs to. (v) Comment on the stability of compound D compared to 3-butanone.What is the organic product formed in the following sequence of reactions? Br (1) Mg/ether, (2) CO₂ HOCH₂/H* (1) DIBAL-H, toluene, -78°C heat (2) H*(aq) (3) H*(aq) II H III IV de "a H H I ?10. 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)
- 1. For the rearrangement of cyclopropane to propene at 500°C, the following data have been obtained: [(CH2)3], M (CH2), CH,CH=CH2 2.98 x10- 5.55 x10-2 1.60 x10- 8.56x10-3 time, min 15.5 31.0 46.5 What is the rate of disappearance of (CH2); over the time period from 0 to 15.5 minutes? 1. a. 0.00166 M/min b. 0.00127 M/min 0.00101 M/min d. 0.000890 M/min e. 0.000480 M/min C.Which 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,C31. 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 NH
- OMe O OMe mechanism requires PdCl₂ (cat) A CUCI, O₂ H₂OQ2- Which one of the following reaction is unreasonabl? A) NaOH(aq)+HCl(aq)-NaCla+H₂O B) H2(g)+1/202)→ H₂Op AHneutralization=-851.5kJ/mol =-283.5kJ/mol AHormation C) CH3COOH + H₂O-CH:COO(g) + H AHassociation = +213.5kJ/mol D) Mg(+2HCl → MgCha) + H₂ - AHformation =+315.5kJ/mol Q3- If A 25.0 mL of diluted bleach solution has required 30 mL of 0.30 M Na S,O; to reach the endpoint of the titration. Calculate the mass percent of NaCIO in the original sample (Molar mass NaCIO = 74.5 g/mol). Assume the density of bleach solution is 1.084g/mL and the dilution factor is 10. B) 9.96% C) 0.996% D) 12.4% A) 19.92% and the coloIdentify the reagents nacessary to accomplish cach of the following transformations. Choose the correct reagents from the following list: CH;CH;COCI, AICI, Fuming H3SO4 CH:CH;CI, AICla SOCI, Pyridine dilute H,S0. Zn(H, HCI, heat (CH:)2CHC, AICI; HNO, HaSO4 Enter the correct letter for sach stap of the reaction in the boxes below. (Reagents con be usad more than once) Step A: Step B: Step C:
- A) Hydrocyanation of butadiene is used to produce adiponitrile, a precursor to nylon. Shown below is the mechanism of hydrocyanation of ethylene, using a Ni catalyst. I) II) III) Ni IV) Ni L H CN H₂ X Ni CN CH3 HCN Ni Ni H CN H₂ CN CH3 CH3CH₂CN i) For each of the reactions, indicate the TYPE of reaction represented and the electron count of the PRODUCT of the reaction (assume that L is a neutral 2-electron ligand): I)_ II) III) IV)1) Clearly draw the mechanism of the reaction of: a) Water with 0=SeCl2 to form O=Se(OH)2 b) Water with 0=SeCl2 to form SeO2 c) Methanol with POC13 to form PO(OMe)3 d) Methanol with P4O6 to form P(OMe)3 e) [S207]?- with HN(CH:)2 to form [SO3N(CH3)2]*Are there any other possible products for the following reaction in catalytic H2SO4 and H2O?