Retrosynthesis: Show how one could carry out the following synthetic transformations using any necessary organic and inorganic reagents. Multiple steps may be required in some cases. Label each synthesis with the corresponding letter as you write it.
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- Complete the reaction scheme below. Show all reagents and intermediates. No reaction is a possible answer. 1) CH3CH2M9B CH3OH H+ (ехcess) но 2) H30*, H2O B A OCH3Complete each reaction scheme below with the starting material required to give the product shown as the only major product following the indicated sequence of reactions. Each individual reaction in the sequence must serve a purpose and must result in a product that is different from the corresponding starting material. 1) i) LIAIH, ii) H30* 2) TSCI, pyridine OTsProvide a plausible synthetic pathway for the following organic transformation starting with acetic acid. Include a step-wise synthesis and show all the reagents used (on top and below the arrows). Но CH3
- Use the reaction given below to answer the following questions. A CH₂OH B H₂O+ C + CH3NH3* D a) What are the approximate pKas of compounds A and B? b) The reaction given above is irreversible. Give a detailed explanation of the reaction and reaction mechanism. Your explanation should indicate your knowledge of the reactivity of carboxylic acid derivatives.4) Provide a synthesis of the following compounds using the given starting material and any other reagents. starting material final product CI starting material final product OH OH OH starting material final product 5) Provide an arrow-pushing mechanism for the following reaction to get to the product shown. HON OH H₂O*, H₂O НО مله4) Give the synthesis for the following compounds. Mechanism is not required. All reagents must be what we have covered in class up to now. A) B) OH НО. H ol COOH
- 4. Propose a plausible synthesis for each of the following transformations. Don't show mechanism. Only provide the necessary reagent(s) and products for each step. a) „Ó -d b) OH HO Br میں کچھShow how to carry out ANY THREE of the following transformations. For each step in your synthesis, clearly show all reagents and reaction conditions (Hint: identify the functional group of your target molecule and determine the type reaction that must be used, then identify appropriate reactant molecules and reaction conditions). a) Any saturated hydrocarbon ŠCH, b) OH c) / OH ? CN d)Select the major product from the reaction sequence shown. 1) MezNH, [TSOH], - H2O 2) 3) HO مال منه NMez .OH ? ka ta
- Choose the most likely regiochemical outcome for the reactants and conditions shown below: 1. BH;THF 2. NaOH, H,O2 Markovnikov with rearrangement C anti-Markovnikov with rearrangement C anti-Markovnikov C None of the choices are correct. C MarkovnikovPropose a multi-step synthesis for the transformation below. No additional carbon sources should be used for the carbons incorporated into the final product. Include all reagents/conditions and major organic products for each step in your synthesis. No curved arrow mechanism needed. НО. HO O -OH3. Propose a synthesis for each product from the respective reactant, which goes by way of a benzyne intermediate. If the specified product is the only product which is formed, indicate that. If the specified product is not the only product formed, draw the structure(s) of any other isomers formed (but choose a route which forms only the desired product, if possible). CF3 НО CF3 H,N CH3 CH3 CH3