2. Product A shown below, might be prepared 2 ways via a Williamson Ether synthesis, using different starting materials. Show the 2 possible routes. Which route would be preferred to make compound A? Why? Explain your choice. Compound A
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- One of the molecules shown can be made using the Williamson ether synthesis. Identify the ether and draw the starting materials. A B C Strategy: Review the reagents, mechanism and steps of the Williamson ether synthesis. Determine which of the molecules can be made using the steps. Then analyze the two possible disconnection strategies and deduce the starting materials. Identify the superior route. Two possible bonds can be formed to make ether C. The highlighted bond in each structure indicates the bond formed in each route. Let's consider each route and determine which is ideal. O Yo C-option1 C-option2 Consider option 1. Draw the alkyl bromide and alkoxide that would give option 1. Select Draw Rings More Erase C H Br 0 Will these reagents give an efficient Williamson ether synthesis? yes no O1. Provide the mechanism of the reaction shown in the picture. 2. Explain why it cannot be done in basic conditions. 3. Why is the enol tautomer favored over the keto tautomer? Ph H3C OH H H3O+/H₂O HO H3C PhPredict the major product and draw the stepwise mechanism for the following reaction. EN 1. LIAIH,, DEE 2. H,o*
- 2. Draw the structure/s of the reactants to have this product using the Williamson ether synthesis.4. Provide a synthesis of the product shown from starting material using a Wittig at some point in your synthesis. You must show the synthesis of any Wittig reagents from an alkyl halide. You may use any other reasonable reagents necessary. nob synthesis? magno H3C.1. Which of these reagents can generate the desired product through ozonolysis?
- 3. Provide a reasonable synthesis for the following transformations. You may use any reactions that we have learned until this point. STEPS STEPSAny help with these would be great! Thanks in advance:) What is the major product of the reactions?C. Using any necessary reagents of 2 carbons or less, and any other necessary inorganic reagents, synthesize this compound.
- Which reaction intermediate (A or B) is more likely to form in the epoxide ring opening reaction? Reactions prefer to react through lower energy intermediates. Hint: how might you justify one structure being lower in energy than the other? Draw structures as part of your explanation why. F F. BOH F :0. Br Br Br H H epoxide ring opening Structure A Which alcohol structure shown below would be less acidic? Explain why. OH Structure B : 0. : OH1. Propose two different plausible syntheses for the following transformation using reactions you have learned in class so far. Show all reagents needed and the structure that results after each step. You may use any other reagents of your choice. The two syntheses should differ in the method used for creating the new C-C bond. Br of - OHDraw a stepwise, detailed mechanism for the following reaction. CH3NH2 N-CH3 CH,NH, Cr (excess)