In each case below select the synthetic procedure/s that could be used to carry out the transformation, giving the alcohol shown as the single major product. The procedures are: Hydroboration/oxidation: alkene + BH3; then H,O2, "OH. Oxymercuration: alkene + Hg(OAc)2, H,0; then NaBH4 CH2CH3 CH2CH3 Но. CH3 CH3 `CH3 `CH3
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- For each of the questions below, fill in the blank. For those blanks that correspond to products, fill in the major product. For blanks corresponding to starting materials or reagents, fill in the appropriate compounds to give the product in highest yield.Rearrangements can occur during the dehydration of 1° alcohols even though no 1° carbocation is formed—that is, a 1,2-shift occurs as the C— OH2+ bond is broken, forming a more stable 2° or 3° carbocation, as shown in Equation [1]. Using this information, draw a stepwise mechanism for the reaction shown in Equation [2]. We will see another example of this type of rearrangement in Section 16.5C.Using the wittig reaction, synthesise aldehyde 4 to form cis alkene 2, and trans alkene 3. In your answer, with your choice of R group, describe synthetic routes to each alkene and include reagents and conditions
- 1. Esters can be synthesized from the nucleophilic substitution reaction of anhydrides and alcohol in the presence of a base give a complete mechanism and the final product for the reaction below 2. using appropriate illustrations, explain what is meant by the tetrahedral transition state( also indicate the geometry for the starting material and product).Draw the structure(s) of the major organic product(s) obtained after workup of the following reaction. Use the wedge/hash bond tools to indicate stereochemistry where it exists. If no reaction occurs, draw the organic starting material. Draw structure(s) of product(s) after aqueous workup. Include counter-ions, e.g., Na+, I-, in your submission, but draw them in their own separate sketcher. Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner.Complete the reaction scheme below with the starting material and reagent required to form the product shown as the only major carbon-containing product.
- When 1,2-cyclohexanediol is dehydrated in the presence of concentrated sulfuric acid, the major product is not an alkene. Instead, you get cyclohexanone. Write a reasonable and detailed mechanism for the dehydration of 1,2-cyclohexanediol to form cyclohexanone. Use curved arrows to show the flow of electrons and draw the structures of all intermediates and byproducts formed in the course of this reaction as well as any alternative resonance structures that will help you to account for the formation of the major product observed in this reaction.What is the strongest IMF in pure 2-octanone? I know it is a ketone and has some polarity due to this, but the carbon chain so long, I wonder if london dispersion forces are stronger?Draw structure of a tertiary alcohol, give its correct name and the show the REACTION MECHANISM for the formation of an alkyl halide from this alcohol. (7) HINT: - The reaction is SN1, it takes place through 3 STEPS and TWO carbocations forms as intermediates. - The reaction was carried in the presence of an acid and in the presence of halide ions, and not at elevated temperature. - Halide ions are good nucleophiles (they are much stronger nucleophiles than water), and since halide ions are present in high concentration, most of the carbocations react with an electron pair of a halide ion to form a more stable species, the alkyl halide product. - OH group is a poor leaving group, thus the alcohol gets protonated first.
- Do hydration reactions like this one have Markovnikov and anti-Markovnikov products? I know that for addition of halides on alkene double bonds, there are Markovnikov products becasue of 1,2-halide/methyl shifts, but there usually aren't shifts in hydration reactions. Essentially, would the Markovnikov/major product for this reaction have a hydroxy group attached to the tertiary carbocation and the anti-Markovnikov/minor product for this reaction have a hydroxy group attached to the adjacent secondary carbocation?Complete the mechanism for the following reaction by filling in the boxes. Do not show stereochemistry in the structures. Be sure to include lone pairs on heteroatoms and any charges where necessary.Several reagents and several organic structures are shown below. Construct a multistep synthetic route from the reactant 2-methyl-1-butene to the product 3-bromo-2-methyl-2-butanol by dragging the appropriate pieces into the bins. Note that each bin will hold only one item, and not every given reagent or structure will be used.