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- Q18 Which compound from the given options would be excluded from the combinatorial library that was created by combining carbonyl compounds in group A with Grignard reagents derived from halides in group B, and subsequently esterifying the resulting product with the acids in group C? Choose your answer (only one right answer) from the options given in the blue box. Group A Group B Group C H OH Jº зон Answer Options chose One C. b. x d.Predict the organic products of the following reaction. Show stereochemistry clearly. The (R) or (S) designation for each stereocenter carbon atom is specified adjacent to the answer box, please draw the products accordingly. X H KMnO4 (aq) KOH, cold (3R, 4S) (3S, 4R)4. The reaction of the epoxide with methoxide produces one of the two constitutional isomers of methoxy-methylcyclopentanol shown below. Write the steps in the mechanism for this process. Be sure to show the following: (1) the structure of any intermediates that are formed during the mechanism, (2), what, if anything, is added or lost during each step of the mechanism, (3) any non-zero formal charges found on the structures that you write. REMEMBER: You may not use any materials except those that are given in the equation. OH H₂C * F OH NaOME/McOH
- Solve Q3 and Q4 with detailed expalantionDraw the products formed by the following acid-base reaction without consideration of the equilibrium position: You do not have to consider stereochemistry. You should include all products. Include counter-ions, e.g., Na+, I-, in your submission, but draw them in their own separate sketcher. Separate structures with + signs from the drop-down menu.Draw the structure of the following three isomeric esters with chemical formula C-H1,0,. Ester #1: (E)-ethyl 2-pentenoate Ester #2: ethyl 3-methyl-3-butenoate Ester #3: (Z)-methyl 3-hexenoate • Consider E/Z stereochemistry of alkenes. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. • Separate structures with + signs from the drop-down menu. opy aste ChemDoodle Previous Next Email Instructor Save and Exit
- Chemistry Q: Kindly explain the striking observation that methylation of the alcohol 1 leads to a methoxy compound in which the stereochemistry of the oxygen has changed. Explain it by providing a mechanism accounting for the transformation. (write legibly pls).Based on the reaction scheme below, deduce and name structures A, B and C. H, Pd A KMno, B (C,H) (CH12) OH (C,H,0,) (1) O2 (2) Zn/H,0 H3C CH3 propan-2-one |Acid-catalysed dehydration of 2,2-dimethylcyclohexanol yields, in part, isopropylidenecyclopentane. isopropylidenecyclopentane Draw structural formulas for the two carbocation intermediates in this reaction. • You do not have to consider stereochemistry. • Do not include counter-ions, e.g., Na*, 1, in your answer. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. • Separate structures using the → sign from the drop-down menu.
- Draw the structural formula for the product formed when propanal reacts with CH,CH – PCHsla Draw Your Solution What are these two isomers? Select the correct answer from below. H. H. Но- HO- CH,CH, CH,CH, H;C H3C (R) (S) (R) (R) Но H. H C-C HO C-C' CH,CH, CH,CH, H;C H;C (S) (S) (R) (R) НО H H HO- + "H "H H,C CH,CH, H;C CH,CH, (S) (R) (R) (R)Can you please help with part a and part b. Thank you (q10)Synthesis of ZybanⓇ: 1. Write a mechanism for the bromination of m-chloropropiophenone. Br₂ CH2Cl2 Cl Br 2. Give the expected m/z (to a round number) for the molecular ion from the product above (including isotopic peaks). 3. What signals appeared/disappeared/shifted that indicate that you have your intended product and not starting material? What other impurities are present in your product and how do you know?