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- Draw the electron-pushing mechanism for the propagation steps of the allylic bromination reactions below. You may omit NBS in your mechanism, and use Br and Br2.Your task is to convert 2-bromobutane to 1-butene in highest yield. Which reagents would you use? O KOH/H2O O KOH/CH,OH O CH3CH2ONA/CH3CH2OH O CH3ONA/CH3OH O (CH3)3COK/(CH3)3COHX Answered - Incorrect • 1 attempt left Identify the compound with the lowest heat of hydrogenation. A A В C Your answer D D A B D O Hint The lowest heat of hydrogenation will come from the most stable alkene. B.
- 5:45 PM Sun Nov 13 ← Question 14 of 28 Draw the major product of the substitution reaction shown below. Ignore any inorganic byproducts. CH3SH Draw SN1 Product Br 27% SubmitDraw the products of the following reactions, indicating both regiochemistry and stereochemistry when appropriate. CH3 1. Hg(OAc)2, H20 2. NaBH4 • Use wedge and hash bonds ONLY when needed to show reaction stereochemistry. In cases where there is more than one answer, just draw one. Visited C P opy aste ChemDoodle®Which statements concerning pericyclic reactions are true? Check all that apply. O 1. Diels-Alder reactions follow a concerted mechanism. 02 Combining four (4) atomic orbitals mathematically leads to 42 molecular orbitals. O 3. Diels-Alder reactions can lead to the formation of diastereomers. O 4. Methoxy groups on a diene increase the rate of a Diels-Alder reaction.
- In each reaction box, place the best reagent and conditions that give the following alkene as the major product. 1) 2) Answer Bank NaBH, H,O, H,SO, Br, BH, /THF (CH,),CO- HBr NaOH H,O2 CH,CH,0-09 PM Wed Apr 5 2. Draw the structures and explain why CH3CH₂O and CH3CO₂ are good nucleophiles but CH3SO3, water, and alcohols (R-OH) are poor nucleophiles. Propose a 'cutoff' for the amount of negative charge needed to be a good nucleophile. CH3CH₂00 Browser CH3CO₂ Downloads Ө CH3SO, Files H₂O CH3OH Settings 100% ➜+ H-Br Energy I 3. H-Br addition to 3-methylbut-1-ene forms 2-bromo-2-methylbutane as the major addition product. 1) Draw the step-by-step mechanism by which 3-methylbut-1-ene is converted into 2-bromo-2-methylbutane. A step-by-step mechanism shows i) the electron pushing arrows for each chemical step, ii) draws each intermediate or product formed by a chemical step and iii) specifies non-zero formal charges. (****Draw your mechanism so that you use the H-Br + 3-methylbut-1-ene (left edge below the graph template) as your reactants and finish your mechanism using the 2-bromo-2- methylbutane (right edge below the graph template) as your product****). 2) Sketch a reaction coordinate diagram that shows how the internal energy (Y- axis) of the reacting species change from reactants to intermediate(s) to product. Each step in a mechanism starts with the reactants of that step, crosses a transition state (an energy maximum) to form the products of that step. Position the relevant local…
- Draw the products of the reaction shown in the electron-pushing mechanism, including hydrogen atoms, charges, and nonbonding electrons. H3C-CH2 + :0H¯ ↑ Draw the products. Add charges and electrons where needed. Select 3 Draw |||||| Rings More с O Br H L Erase Q2 QUse curved arrow formalism to draw the mechanism of the reaction shown below. Br₂ CH3OH CH3 Br OCH 3 b) Draw the reaction energy diagram for the mechanism you drew in a). + enantiomer5. Draw the major product of the following reactions. Classify each reaction as substitution, elimination, or addition. Indicate if there are any rearrangement products. If the reaction does not proceed, explain why. H₂O, H* HO OH 1) Hg(OAc)2 2) NaBH4 H3PO4 H₂SO4, 100 °C 1) BH3*THF 2) HOOH, -OH CI NaN3 (1 equiv) THF