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- For the following reactions, explain which product(s) will form and why. Cro; H2SO4 PCC Cro3 HO H2SO47. 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.: Synthesis the followiong reactions (five only). Pt 1) Cyclohexyne 2H, (850-900)C 2) 3) CH,CH,CCCH, + H;0 2HBR 5) + Zn 6) + HF
- NBS ·Br Mg, ether> CO2 9. Determine whether the following reactions are flawed. Put "Yes" on the line for flawed reactions and for reactions that are not flawed (3 points). MeO COME LIAIH4 HgSO4 H3O EtOH H₂O 7 O EtQ OEt 667 MeO1c. What is the nucleophile in the following reaction? .Br CH;CO0 Na LO OCCH3 NaBr ld. What is the electrophile in the following reaction? Br CH;COO Na L0OCCH3 NaBr +Which of the following would be the major product of this reaction? Br t ㅅ H 1 OIV O ||| O II Hint Save for Later Kot-Bu II ||| t IV
- Please fill in the blanks with appropriate, reactants, products, or reagents. CI ? NaSH ? DMF Br KCN ? AcetonePt + H2 он CH;CHCH, CH; What starting reactant is necessary to complete the reaction above? 2CH;C-H CH,CH, CCH; 2CH;C-H CH,CH, CHCH; Ó-CH;1. OH ??? Br + B ОН For the above reaction identify the catalyst and reagents and also show the catalytic cycle.
- For the following reaction there are three (3) possible products. Two of the products are expected to be minor and one product is expected to be a major product. Br H₂O Name and draw out the step-by-step mechanisms by which each of the products is formed. Briefly explain why one of the three products is expected to be a major product.A mechanism for the reaction of bromine with 4,4-dimethylcyclopentene in water is shown below. Which of the following statements about this mechanism is correct? Step 1 Br Br Br + Br Br Step 2 Br ;OH OH2 Br Br XX .. Step 3 + Hо HO:) H. O In Step 1, bromine could add to the other face of the alkene, giving a bromonium ion that is the enantiomer of the one shown. O In Step 2, water could attack the other carbon atom of the bromonium ion, leading to the enantiomer of the product shown. O This mechanism is complete and correct. O In Step 2, water could attack the bromonium ion from the other side, leading to the cis product.Supply the missing products in the following reactions, as indicated by CAPITAL letters inside the box. A Cl CH H,5O, H,0 HgSO. H, PrO, G H CHCH;Br NaNH, 2кон, athanol F KMN0, H