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- 6. Identify the best reagent(s) for this reaction. (see attached screenshot). a. H2SO4, HgSO4, H2O b. 1. Disiamylborane, 2. HO–, H2O2 c. K2Cr2O7, H+ d. NaOCl e. H2, Pd1. What is reaction 1? a Halogenation via SR b Halogenation via SE c Halogenation via AE d Hydrohalogenation via AE 2. Which pair of reagent/catalyst is needed for reaction 1? a HBr / DCM b Br2 / CCl4 c NBS / H2O2 d Br2 / uv 3. What is reaction 2? a FC Acylation b FC Alkylation c Halogenation via SE d BrominationWhat is the major product of the reaction below? What is the mechanism? (See the image) a. 2-bromo-3-methylpentane, SN2 b. 3-methoxy-2-methylpentane, SN2 c. 3-bromo-2-methylpentane, SN2 d. 2-methoxy-3-methylpentane, SN2
- 19. (a) Show the structure of all reactants and products for the bromination of 1,2 dimethylcyclopentene. Show the proper stereochemistry of the products. 1,2-dimethylcyclopentene + Br2/CCl4-----> Products (b) Show the mechanism of the reaction in (a) above.1a) What’s the product in the following reaction? a. 4 b. 1 c. 2 d. 5 e. 3 1b) What reagents would you use to prepare product A with good yield? a. CH3CH2CH2CH2I; 2) Li, NH3 (liq), -33 °C b. KNH2; 2) CH3I; 3) H2, Pd/C c. HBr; 2) (CH3CH2CH2CH2)2CuLi d. NaNH2; 2) CH3CH2CH2CH2Br; 3) H2, Lindlar catalyst e. (CH3CH2CH2CH2)2CuLi; 2) H2, Lindlar catalystThese reagents can produce ketones with alkynes A. BH3, THF, H2O2 B. KMnO4 C. O3 D. H2SO4, H2O, HgSO4 choices:A,DB,CA,B,CA,B,C,D
- Choose the best reagents from the list provided below for carrying out the following conversion. Match the reagent with the step number. HCl (aq), Zn(Hg) Br2, FeBr3 Na/NH3, -33 degrees C NBS, light KMnO4, H3O+ Mg metal, ether KOH, EtOH, heat2. How many substitution product/s is/are formed when metabromo anisole is treated with ammonia?A. 0-no reactionB. 1C. 2D. 3A. OsO4 and NMO B. Br2 and H20 C. Hg(OAc)2, H2O and NaBH4, NaOH D. RCO3H E. BH3-THF and H2O2, NaOH Which reagent will complete this reaction?
- Which alkene is major product of the E2 reaction below? Options: 1 2 3 4The following reaction has a ΔSsystem < 0 O2(g) → 2O(g) T or F can you explain why this is false?What is the major product of the reaction of 2-methyl-2-butene with each of the following reagents? a. HBr b. HI c. Cl2/CH2Cl2 d. O3, −78 °C, followed by (CH3)2S e. H2/Pd f. MCPBA (a peroxyacid) g. H2O + H2SO4 h. Br2/CH2Cl2i. Br2/H2O j. Br2/CH3OH k. BH3 /THF, followed by H2O2, HO-, H2O