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- 7. Reaction Scheme. NH₂ NH2 or two differnet methods (no same steps/reagents) C5H12N2 1. xs Mel, xs K2CO3 2. Ag2O, H₂O 3. heat Br2, xs NaOH, xs H₂O OHC 1.03 2. DMS CHOH H ČH3 Br р. + CH;C=C: in acetone Reaction Type(s) Mechanism(s) Product(s). Stereochemistry (if applicable) q. p-chloronitrobenzene + sodium ethoxide Reaction Type(s) Mechanism(s) Product(s). Stereochemistry (if applicable)Which conditions will produce the target product in the highest yield? O A) 1. BH3; 2. H₂O₂, NaOH, H₂O B) 1. OsO; 2. S(CH3)2 C) 1. Hg(OAc)₂, H₂O; 2. NaBH4 D) H₂SO4, H₂O A ? B OH racemic mixture
- с-НCI (1 drop) H. OCH2CH3 H2N NH2 O2N ethanol, reflux 1. major product 2. the most plausible mechanism plziii) 10. For each of the following reactions, provide the structure of the major product and circle the predominant mechanism. Indicate the stereochemistry where necessary. VII) E1 E2 SN1 SN2 E1 E2 SN1 SN2 NaSH DMF H* CH3OH Br (CH3)3COK (CH3)3COH OH iv) HBr viil) E1 E2 E1 E2 SN1 SN2 SN1 SN2\/C)0.Bm HB 4 1. What reagent can be used to form the product in each of the following? но | || H-C-C-H Н WA Н- нон -C-C-H Н Н нно -С-С-С-О I Н Н — - - - HO H-C-C-OH H H OH H | | | H-c-c-c-H | | | Hнн HHO H-C-C-C-H Н Н What is the product of this reaction? H OH H-C-C-CH3 H2CRO4 H CH3 What is the name of the bond formed when methanethiol is oxidized? CHz-S-H + H-S-CH3 — CH-S-S-CH3 + H2O Identify the acetal and hemiacetal functional group in the following OF CH охо OH OPE Guitkwot И www CH₂ OH H ко Calculate the molecular formula for each of the following. 985 НО
- Which of the following represents the correct transition state for a hydroboration reaction mechanism (use the correct number or your answer: 1, 2, 3, or 4)? Also, answer any follow-up questions. Anne + BH₂ CH₂ H₂B----H Hiine. R 2 CH₂ H 3 ansition state of hydroboration is best described by structure number -CH₂ "do e term (one word) that describes the stereocontrol of the hydroboration reaction? te da term that describes the regiocontrol of the hydroboration reaction? the term (one word) that best describes how the bonds are broken and formed in the first step of a hydroboration ism? 4 BH₂ CH₂2 hp9. Write structural formulas for the major organic product(s) for the following reactions. Be sure to indicate stereochemistry when relevant. (CH;CH,CH,),CuLi (a) Cl Br PAL2 (b) HO (c) CH;CH,CH,CH,OH C,H5MgBr 10. Propose a reasonable mechanism for the following reaction Be sure to include all intermediates. (transition states are not necessary) Br Br hv CH3-CH=C(CH3)2 + Br, ČH,-CH=C(CH3)2 CH2=CH–Ċ(CH3)2 11. Indicate how each of the following compounds could be prepared using the given starting material CH;CH,CH,CH3 CH;CH,CH,CH,Br CH;CH,CH,CH3 H,C=CH-CH=CH2 Br CH;CHCH,CH3 CH;CH=CCH,CH3 CH3c. Snl reactions dominate under polar protic solvents. Increasing the polarity of the solvent will increase the rate of the reaction because the polar solvent will stabilize the dispersed charges on the transition state more than it will stabilize the neutral reactant. Label areas of ô* and & on the molecules of the transition state of the SN1 reaction below: Me Me Ме Me Me H20 Br -Br OH + НО \'H Et Et RDS Et H Et Et transition state not isolable carbocation intermediate not isolable
- 6. Complete reaction scheme below indicating reagents, catalysts and conditions, and side product trigil bezinslog si6101fon 290b 1l (b Senines levirba 6 gaubong nasamots gniwollot ads to doinW 01 sniowl (6 CH3 40 CH3 Scansgowi (d Ege nodie) ( nsgyxo (b NO₂ 19m02 2i gniwollet sits to mainW II HO13.a. Give the mechanism(s) and product(s) for the reaction below. Show stereochemistry. CH3 H3C CH3 ||||C KOtBu tBuOHThe cis and trans 2-butene stereoisomers have the following rate constant values associated with the electrophilic addition of water in an acid medium at the same temperature. what is the difference between the two values through the energy profile of each reaction. CH3 H,O productos H+ H3C k = 3.51 x 10- M's1 H3C CH3 H,0 > productos H+ k = 8.32 x 10®M's1
