Show how to make 2-methyl-2-pentene from two smaller compounds using a Wittig reagent. You must include...
How many products would you expect from the reaction of (S)-2-methylcyclohexanone with methyl magnesium bromide (include the stereoisomers)? Draw the stereoisomers of the product and specify the relationship between them. Following is a cyclic acetal formed from cyclohexanone. What are the reagents required for this reaction? Also write a stepwise mechanism for the formation of this acetal from cyclohexanone. Show how to synthesize the following compounds using a Wittig reaction. Design the synthesis of compound A (5-(1-hydroxycyclohexyl)pentan-2-one) starting from cyclohexanone...
Problem 1. Synthesize the following alkene through the Wittig reaction of a carbonyl compound and a Wittig reagent. 2,3-diphenyl-2-butene 2. Predict the products of the following reactions. Casco CHCH.CHCH, CHCH.CH но ats ОО 2.0 CH,CHACHCH,CHCHOCH.CH, CH 3. A useful and general method for the synthesis of alcohols is the addition of Grignard reagents to carbonyl compounds. Show what Grignard reagent and what carbonyl compound you would start with to prepare the alcohol below. List all possibilities. 2-methyl--butanol 2-METHYL-2- BOTANIC
22. Show how you would make the target compounds on the right form the starting compounds on the left. Show reagents and conditions where appropriate, and the structures of important intermediate compounds. Do not show any (arrow pushing) mechanisms!!!! (8 points) NH2 3-Steps NH2 17. Show the products and give reaction mechanisms for the following, using curved arrows to indicate the flow of electrons between intermediates.
S. Show how you would prepare the following compound using an organometallic reagent. You may use any hydrocarbons, organohalides, alcohols and/or carbonyl compounds that have five of fewer carbon atoms You may also use any needed reagents and solvents OH This one as well. He quits grading when you get two mistakes. 6. Propose a synthesis of the following compound using a Wittig reaction. You may use triphenylphosphine (Ph P) and any reagents containing five carbons or less as starting...
5. Show how you could synthesize the following. (16 pts) A Using the Wittig reaction y vang Ho wang reason Mo + Phypoger 8 ОН Hint: Use the appropriate aldehyde or ketone, and a Grignard Reagent 6. Write the mechanism for the following reaction. (8 points) OH 1. emger 2. H₂O*
Draw and upload a reaction scheme to show how you would make 2-butanone starting from 1-butene using reactions we have discussed in class, clearly showing products and needed reagents. Hint: multiple reactions are required!
30. Show how you could accomplish the following conversions. It will take more than one step a. prepare acetaldehyde from ethene b. prepare 2-methylpropane from 2-methyl-2-propanol c. prepare butanone from 1-butene d. prepare propanamide from 1-propanol e. prepare 1-pentene from 1-pentanal f. prepare cylopentene from cyclopentanone g. prepare 1,2-dibromobutane from butanal 26. 27. How could you make benzoic acid more soluble in water? Write the equations for the reactions of ethylamine with water and with a strong acid. Name the...
show how you would prepare the following compounds from 4-methyl-3-penten-2-one. (CH3 02C CHCOCH3 (a) CH CH3C -CH CH2CH3 (b) CH3 CH3CHCH2CH2CH3
2. Provide the complete mechanism (curved arrows) to show how the product is formed. Include all lone pairs, formal charges, curved arrows, intermediates, and products. You do not need to draw the structures of transition states. If there is a carbocation rearrangement and/or a proton transfer, be sure to include it (them) in your mechanism. (Remember to start by drawing all ionic compounds as ions/drawing out the structure of all reagents, and drawing in all lone pairs.) HCI 3. Which...
Show how the reaction of an allylic halide with a Grignard reagent might be used to synthesize the following hydrocarbons (draw two starting compounds; one allylic bromide and one Grignard reagent.) Make sure your Grignard is a bromide in problem. 1. 5-methylhex-1-ene 2. 2,5,5-trimethylhept-2-ene 3. 1-cyclopentylpent-2-ene