Draw the product(s) of the following Diels-Alder reaction. Explain the formation of the product(s) by suggesting a mechanism. OH + OH 80 F3 F4 A % L O F5 MacBook Air F6 об г F7 * DII F8 O F9
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- Draw the structure of the product of the Diels-Alder reaction below. H3C CH3 O || O || + CH3OC-CEC-COCH3Identify the expected major product of the following Diels-Alder reaction. c.A clock clos II V OIII OIV OV 0l OI IV ?Which constitutional isomer represents the product of this Diels-Alder reaction?
- 9. For the following Diels-Alder products, propose the correct starting materials needed. D. a. b. C. fo{- ●●● Xox -True or False: Acetylene is a naturally occurring conjugated diene True or False: The Diels-Alder reaction has the stereochemistry of the dienophile is retained in the product. True or False: When looking at kinetic vs. thermodynamic products the kinetic product predominates at low temperature. True or False: the mechanism of the Diels-Alder reaction is three π bonds break; one σ bond and two π bonds form.Mechanism The Diels-Alder reaction is part of a class of reactions known as a cycloaddition reaction. This reaction is specifically a [4+2] cycloaddition which is a concerted (one-step) process in which two new carbon - carbon sigma bonds are formed from two pi bonds. For the first Diels - Alder step of the mechanism fill in the arrows needed for the transformation. The rest of the mechanism is drawn for you. OH Show mechanism arrows for this step! 4 + 2 cycloaddition OH H D- & H+ transfer OH Nuc acyl substitution H L.G.
- 2) Predict the major product for each Diels-Alder reaction. Include stereochemistry where appropriate. H. C=N (a) H H. CH3 CH;O, (b) Ph (c) PhWhat is the diene and dienophile?Compounds P and Q can undergo a Diels-Alder reaction to form two regioisomeric products R and S as shown in Figure 5. OMe O C8H12O2 R C8H12O2 S Figure 5 Draw the chemical structures of regioisomeric compounds R and S. Using possible resonance contributors of P and Q predict which of the two regioisomers will be favoured in the reaction. Using curly arrows, draw the mechanism for the reaction of P and Q to form the dominant regioisomer you have predicted in your answer to part (ii) above.