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- Consider the following mechanism of reaction: CH3 CH, CH3 CH;C CH, + H-CI CH;CCH, + C: → CH;CCH, tert-butyl cation CI tert-butyl chloride In this reaction: The alkene and the carbocation intermediate are both nucleophilic HCl and CI" are both nucleophilic The alkene and HCI are both electrophilic The carbocation and CI" are both electrophilic The alkene and CI" are both nucleophilic AMeving to another question will save this response46. The Strength of Nucleophile: Which one is the strongest nucleophile? OH (B) 0-CH, -CH, (D) O (C) O (A) O (D) O (B)Plastic photochromic sunglasses are based on the following reversible rearrangement of a dye inside the lenses that occurs when the lenses are exposed to sunlight. The original dye absorbs UV light but not visible light and is thus colorless, while the rearrangement product absorbs visible light and is thus darkened. (a) Show the mechanism of the rearrangement. (b) Why does the rearrangement product absorb at a longer wavelength (visible light) than the original dye (UV)?
- Which of the following is NOT a rearrangement reaction? CH, CH, H,C CH, + CH3 H,C CH3 CH, CH, CH, CH, CH, H,C H,C + CH CH CH, CH, H,C H.What is the product of the following sequence of reactions? CHO NACN H3O*, heat HCI OH OH .CO2H .CN CO2H `CN Он ÓH II IV %3D7. The reaction of methoxide anion with bromoethane to yield the ether ethyl methyl ether and the bromide anon (Br-) is an excellent example of a general reaction type called Sy2 (substitution nucleophilic bimolecular): CH,0+ CH,СH-Br a CH3-0-CH,СH; + Br- a. Change in enthalpy is -103 kJ/mol; the change in entropy is + 0.025 kJ/mol-K. Calculate DG at 300K. b. Is the reaction endergonic or exergonic? c. Is the reaction endothermic or exothermic? d. Use curved arrows to show the complete mechanism. Reaction of 2-methyl-1-butene with H-Cl could yield TWO alkyl chloride products. Draw and name 8. them.
- 122. For the following three step conversion of A to B, the appropriate sequence of reactions is A OH CAREER ENDEAVOUR B CHO (a) MnO₂; (CH₂OH),/p-TSA; PCC (b) PCC; MnO₂; (CH₂OH)₂/p-TSA; (c) PCC; (CH₂OH)₂/p-TSA; Jones' reagent (d) Jones' reagent; (CH₂OH)₂/p-TSA; MnO₂.Q15 Which of the given species or reaction steps, involved in a Grignard reaction, is not correct? Here, the species can be a reactant, intermediate, transition state, product, or byproduct. aj MgBr b) H₂0 Br :05 H *MgBr H HQuestão 10A certain hydrocarbon had the molecular formula C16H26 and contained two triple bonds. Ozonolysis resulted in CH3(CH2)4CO2H and HO2CCH2CH2CO2H as the only products. What is the reasonable structure for this hydrocarbon? Hexadec-6,10-dino undec-1,5-dino Hept-1,5-dino hex-1,5-dino nah
- 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.Synthesi Cycloper cyclohexene OHWhat is the MAJOR product of the reaction belaw? Ch H3C- NHCCH3 FeCl H3C - NHCH3 H;C- - NHCCH3 © H;C- || - NHCCH3 H3C- - NHCCH3