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Propose a synthesis using the two alcohol reactants shown below to prepare the ketone product: Multiple...
1. Propose synthesis for the following transformations, they should all require multiple steps: он 2. он 3. Br
OCH3 OH from One route to the synthesis of HO and CH,CH2MgBr is to 1) protect the ketone as an acetal, 2) reduce the ester to an alcohol, 3) hydrolyze the acetal back to the ketone, 4) protect the alcohol as a TMS ether, 5) react the ketone with the Grignard reagent followed by acidic workup to give the desired product. A second route to the desired product would start with the selective reduction of only the ketone to an...
Please explain the mechanisms! 1. Propose a synthesis for each of the following problems starting with reagent shown and using any other organic or inorganic reagents allowed in each problem. Multiple steps are required. The number of steps you use does not matter. Reactions should give the desired product as a major product. For full credit show the product of each step (reaction). If you make use of organometallic reagents such as Grignard, Wittig, organolithium, organosodium, organocopper, etc. you must...
8. Synthesis: Propose a reasonable synthesis for the overall transformation shown below using any other needed reagents. (5 pts.)
11. Propose a synthesis for each compound below. You must write in all necessary reactants, reagents, and solvents to receive full credit. Your starting materials must be 3 carbons or less. If you use an ionic or organometallic species, you must show how it was synthesized from a neutral, covalent species. Any species that adds carbon to your product must be synthesized from a molecule of 3 carbons or less. Only show the steps of your synthesis- do not put...
Draw structural formulas for an aldehyde or ketone and alkyl (or aryl) bromide that could be used in a Grignard synthesis of the alcohol shown. You do not have to consider stereochemistry. If there is more than one combination, draw only one. Draw one structure per sketcher. Add additional sketchers using the dropdown menu in the bottom right corner. Separate multiple reactants using the + sign from the dropdown menu. Draw structural formulas for an aldehyde or ketone and alkyl...
1. Provide a multiple step synthesis for the transformation shown below. 2. Identify the carboxylic acid and alcohol needed to make the ester shown below. 3. Propose a mechanism for the reaction shown below. 4. Show all the important resonance structures for the anion shown below. Include arrows that show how to reach each form. Indicate which resonance structure makes the greatest contribution to the resonance hybrid and which resonance structure makes the least contribution to the resonance hybrid. 1....
Suggest a synthesis for each alcohol, starting from an aldehyde or a ketone and an appropriate Grignard reagent (the number of combinations of Grignard reagent and aldehyde or ketone that might be used is shown in parentheses below each target molecule): (Two combinations) 1. CH3MgBr in ether 2. Hz0+ 1. B in ether H 2.H30* Structure A: ? Edit Structure B: (Two combinations) MgBr 1. ether + C 2. H30 1. E in ether 2. H30* 1. CHM9Br in ether...
3. Propose the synthesis (multiple steps are needed): H2H
Draw the product of the following reaction between a ketone and an alcohol. Include hydrogen atoms in your structural formula. он + H3C-¢-CH3 + HO-CH2-CH3 6-CH2-CH3 How would you classify the product of the reaction? It is an alcohol. + H20 It is a ketone. It is a hemiacetal. It is an acetal.