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- The mechanism proceeds through a first cationic intermediate, intermediate 1. Nucleophilic attack leads to intermediate 2, which goes on to form the final product. In cases that involve negatively charged nucleophile, the attack of the nucleophile leads directly to the product. H. Br + CH3OH Br Intermediate 2 (product) Intermediate 1 In a similar fashion, draw intermediate 1 and intermediate 2 (final product) for the following reaction. OCH3 Cl2 MEOH ĆI racemic mixture Pay attention to the reactants, they may differ from the examples. In some reactions, one part of the molecule acts as the nucleophile. • You do not have to consider stereochemistry. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate intermediate 1 and intermediate 2 using the the dropdown menu. → symbol from6. For the following reactions, predict the major and minor products. Label each. 1. BH₂/THF 2. H₂O₂, OH, H₂O 1. Hg(OAC)₂, H₂O 2. NaBH4The alkyl halide shown reacts with sodium methoxide to form an organic product. H3C Br NaOMe H3C. CH3 major organic product H C CH3 Determine whether this reaction proceeds by SN1, SN2, E1 or E2 and identify the major organic product. Step 5: Draw the major elimination product expected in the reaction. Draw the product. Select Draw Rings More H₂C Br 2 H3C. 1 CH3 H₂ 4 CH3 5 NaOCH3 Erase
- Help In finding the major organic products for these reactions + NaOCH2CH3 1. add slowly 2. HCI b) 1. NaOCH, CH3OH 2. (CH3)2CHCH2CH₂Br 3. H3O+, heatPredict the products of this organic reaction: CH3 CH₂ || No reaction CH3 | O−CH–CH2–CH3 + KOH A Specifically, in the drawing area below draw the structure of the product, or products, of this reaction. (If there's more than one product, draw them in any arrangement you like, so long as they aren't touching.) If there aren't any products because this reaction won't happen, check the No reaction box under the drawing area. Click anywhere to draw the first atom of your structure. X Ś ĆChoose the reagent(s) that would be most likely to complete this reaction. HO 1. Hg(OAc)2, H2O 2. NaBH4, NaOH Q Q 1. OsO4 (catalytic) A 2. NMO Br2 B H2O 1. BH 3-THF C 2. H2O2, NaOH 1. Hg(OAc)2, H₂O D 2. NaBH4, NaOH E RCO3H
- Choose the reagent(s) that would be most likely to complete this reaction. T OH A B C D E 1. OsO4 (catalytic) 2. NMO Br2 H₂O 1. Hg(OAc)2, H₂O 2. NaBH4, NaOH RCO3H 1. BH3-THF 2. H2O2, NaOH Ⓒ Doneb. A chemist wants to use a Grignard reaction to make 1-phenylethanol. Which of the following reactions will successfully form the product? Assume a final acidic workup after each. For any reactions that will not make the product correctly, propose an alternate way to get to the product. Reaction 1 Reaction 2 Reaction 3 CH3Br HBr Br Mg ether OH Mg ether Mg ether H O H r O rName: 1. Use these four possible reaction products to answer the next five questions. A 1a. Which major product from A-D above is produced in the following reaction steps? 1) BH, THF 2) H₂O₁/NaOH 1b. Which major product from A-D above is produced in the following reaction? H'/H₂O 1c. Which major product from A-D above is produced in the following reaction? cold dil, KMnO. OH 1d. Which major product from A-D above is produced in the following reaction steps? 1) Hg(OAc), H₂O 2) NaBH₂ 2. What is the major product of the following reaction? HCI You D •} D
- 4. LIAIH(Ot-Bu)3 allows for only one hydride to attack a reactant, unlike LIAIH4 (LAH). For the scheme below, provide the major organic product of the reaction shown. H 1. LIAIH(Ot-Bu)3 2. H₂O*Q5. A. Complete the incomplete reactions. Also write stepwise mechanism for the given reactions. CH3 i. BH3, THE ii. H2O2, HO Br H20 ii. H3C OH H. H3C Br Br2, H20 CH3 Br OH organic solvent CH3 КОН CI V. + CHCI3 KCI CI3. CONCISELY explain why the following reaction would NOT work. Br CH₂ CH₂ SH 1.2 Li 2. CH3 CH3 -CH₂ 3. H3O+ work-up CH 3 CH3 HO CH₂ CH₂. CH₂ SH