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.
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.
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.
(2) Diels-Alder reactions of a diene with a dienophile are known to undergo a concerted reaction. However, 2,3-Di- tert-1,3-butadene does not undergo Diels-Aider reactions. Explain 2,3-di-tert-1,3-butadiene (4) Propose mechanisms for the following steps 1 and 2. Slep 1 Step 2 Bry Br NaBH CH acetic acid (I) Using> as a symbol, rank the following alkyl bromides in order of decreasing reactivity. (6 pts) Br Cн,Br -Br (a) For hydrolysis by an Sy1 mechanism (b) For hydrolysis by an S,2 mechanism...
Organic Chemistery Lab This is my crude product H NMR. (Exp: Diels-Alder Reaction in water) Anthracene-9-methanol and N-methylmaleimide react in water, and refulx 1.5h, than Anthracene-N-methylmaleimide Des-Alder adduct was created. TA told me that specturm is excellent, but there are so many mistakes at labels. Please see my data, and let me know if there are mistakes. 17091 5i3-0502 exp#1 crude CD-04-Suwon gyenewow 27 27 26 26 26 26 25 25 25 25 24 24 23 23 22 21 20...