Step 3 Add two curved arrow(s) to draw step 3 of the mechanism: collapse of a charged tetrahedral intermediate. Modify the given drawing of the product as needed to show the intermediate that is formed in this step. Use the +/- tools to add/remove charges, and use the single bond tool to interconvert between double and single bonds. CH3 میں CH3 1 CH3 ہیں CH3 Edit Drawing
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- Practice Problem 13.38d Propose a plausible mechanism for the following transformation. OH [H,SO4] MeSH MesUsing a curve arrow, show the reaction mechanisms to indicate the flow of electrons. (Hint: Look at the product side to better understand the flow of curve arrow) (a) :çi-çi: + H-N-H - H-N-H + :Ci: (b) H CH3-0: + H-C-Br: CH3-ö-CH3 + :Br: (c) :0: :0: H3C OCH3 H3C OCH3HO HO Ме— „Me `NH2 H2 F G (d) What type of mechanism is involved in this reaction? Explain the abbreviation used. (e) Would Me-F react with F in the same way? Explain. (f) Why does the N react with Me-l in preference to the O or any of the C atoms?
- 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 HO10. practice q 10 Compound Free Energy HO A A reacts with B in the presence of sodium hydride to give C as a major product. NH₂ Ph B ŌSO₂CF3 NaH, THF a) Provide a detailed mechanism for the formation of C and draw it in the box above. ( C b) Draw the reaction coordinate diagram of that reaction. Indicate with an arrow the rate- determining step of the reaction then draw its transition state: Reaction Coordinate c) The reaction rate observed was 5 x 10-2 M.s¹ when the concentrations of A and B were 0.2 M and 0.1 M respectively. Determine the rate of this reaction when the concentration of A and B are now 0.3 M and 0.2 M respectively. Show your work.2. Draw a reaction mechanism to explain the following reaction. O OH i. OH (aq) LOH
- Add curved arrow(s) to draw step 6 of the mechanism. Modify the given drawing of the product as needed to show the intermediate that is formed in this step. Use the +/- tools to add/remove charges, and use the single bond tool to interconvert between double and single bonds. F H C N 0 P SF OH ہیں۔ ہوم CH3 CH3 CI Br CH3 H.C CH3 H₂C Y\Z++++ - 1Draw the major organic product of the bimolecular substitution and use curved-arrow notation to draw the mechanism. Be sure to draw any non-bonding electrons. Step 1: Draw curved arrows. Select Draw Templates More / " C I Na ° Step 2: Draw the product with electrons. Erase Select Draw Templates More Erase // C H о Na + : 0: (CH3)2CHOH +Nal Question Source: Vollhardt 7e - Organic Chemistry: Structure And Function | Publisher: W.H. FH но. но HO Ethylene oxide is the starting material for the synthesis of 1,4-dioxepane. Draw curved arrows to show the movement ofelectrons in this step of the reaction mechanism. Arrow-pushing Instractions HO+ но H,ö: HO: :o: :o: I-
- The accepted mechanism for a rearrangement reaction is shown below. "Q Ph (1) (ii) Ph Ph HO™ fast Ph Ph HO O™ slow Ph aufae .Ar² LOH HO™ fast Draw a curly arrow mechanism for this transformation. Sketch an energy profile for this reaction, showing approximate relative energies for the reactants, intermediates, transition states, and products. HQ Ph (iii) When DO™ was used as the reagent, the rate of product formation was same as for HO™. Explain why this result shows that the third step is fast and cannot be rate-determining. Ph (iv) Write the predicted rate equation for this mechanism, and show how it was derived. (v) The starting diketone may have two different aryl groups, as shown below. Propose a ¹³℃ labelling experiment that would allow you to distinguish which of the two aryl groups had migrated in this situation. OH AR²0- Ar¹ C CMechanism. Provide the complete mechanism for the reaction below. You must include appropriate arrows, intermediates, and formal charges. میلیم OH u o OH NH 2. HeatConsider the reaction and answer the questions that follow. CH-CH2- CH2-I • CH,S° CH3- CH2- CH2-S– CH; + CH3-CH= CH2 Product A Product B O Explain which type or types of mechanisms (Sw1, SN2, E1, and E2) are applicable to this reaction. [") How can you increase the percentage of Product A? [ui) How can you obtain Product B as almost the only product? A. [i] SN2 & E2 [ii] Use better nucleophile [iii Use a non-nucleophilic base B. [i] SN2 & E2 [ii] Use higher Temperature [iii] Use a non- nucleophilic base C. [i] SN2 & E2 [ii] Use lower Temperature [iii] Use a non-nucleophilic base D. [i] SN1 & E1 [ii] Use lower Temperature [iii] Use a non-nucleophilic base