
2. You are told in the introduction that water increases the rate of the Diels-Alder reaction...
5. This reaction uses water as a solvent to efficiently prepare the Diels-Alder product, even though the reactants and products are not soluble in water. Explain what is meant by "hydrophobic effect" and how it is used in the context of this reaction. You may use the back side of this worksheet to answer the question. (4 pts) IC
5. This reaction uses water as a solvent to efficiently prepare the Diels-Alder product, even though the reactants and products are...
explain how the hydrophobic effect results in rate acceleration for a diels alder reaction
Make a prediction of the rate of Aiels-Alder reaction. Give
reasoning.
2. The nature of the diene has a very important effect on the rate of the Diels-Alder reactions. Make a prediction on the rate of Diels-Alder reaction with the following dienes, and provide a simple explanation for your reasoning. You may need to research this, (check your Organic Chemistry textbook), in particular the concepts of s -cis and s -trans. (Hint: a is the fastest in this series, and...
5. Arrange the following solvents in increasing order of reaction rate for Diels-Alder reaction between anthracene and 1,3-dimethylcyclopentene. Draw structure of product with appropriate stereochemistry. 10 points Ethyl acetate diisopropyl ether Ethanol Water Hexane The same order of reactivity would not necessarily result in the highest yield of the product - meaning, the solvent with highest reactivity would not necessarily give you the most amount of product based on procedure employed in the lab. Explain why this is so.
Would the rate of a Diels-Alder reaction, be faster, slower, or the same as if you used difluoromaleic anhydride instead of maleic anhydride. Explain your answer. What is the purpose of adding petroleum ether to the reaction mixture prior to filtration ? Explain how it causes crystals to form .
Why is a Diels-Alder reaction important to organic chemists, and the general public? What has it been able to provide the human race in layman's terms? How would you explain it to someone who isn't a chemist.
I did an organic chemistry lab using the Diels-Alder reaction with anthracene-9-methanol, N-methylmaleimide, and water. I started with 0.066 g of anthracene-9-methanol, 25 mL of deionized water, and 0.070 g of N-methylmaleimide. How would I calculate the percent recovery of the product? (not the percent yield)
Organic Chemistery Lab
This is my crude product IR spectorscopy (Exp: Diels-Alder
Reaction in water)
TA told me that double check aromatic C-C strecthes and C-N
streches, please see my data, and let me know if there are
mistakes.
90 80 1 70 60 C-Cgrich uelium) 50 g40 Cme tum 30 3 10 -10 4000 3500 3000 2500 Wavenumbers (cm-1) 2000 1500 1000 SuwonChae Exp#1 Crude sample IR Thu Sep 14 14:40:59 2017 (GMT-05:00)
Forward and Retro Diels-Alder Post-Lab Questions: 5-methylfuran-2 (5 H)-one (see below) is an alcohol/water sensitive compound. In the presence of an alcohol, it undergoes a process known as transesterification. Draw the structure of transesterified 5- methylfuran-2(5H)-one: 1. H CHн-он :0: Transesterification -СH3з If the reaction vessel were exposed to methanol during the course of the reflux, would a Diels-Alder reaction also take place with the transesterified dienophile from question 1? Why or why not? Draw the structure of the product...
Quinones are excellent dienophiles in the Diels-Alder reaction. What product would you expect from reaction of 2-methylbenzoquinone with 2 equivalents of 2,4-hexadiene? Drawn out.