Draw the structure(s) of the product(s) of the following Diels-Alder reaction. Stereochemistry must be shown, and make sure to draw explicit hydrogens around all stereocenters. HO 0 OH + I X heat Click and drag to start drawing a structure.
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- Draw structural formulas for the diene and dienophile that combine in a Diels-Alder reaction to form the product shown. Diene + Dienophile ? CH3 Consider E/Z stereochemistry of alkenes. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate multiple products using the + sign from the drop-down menu. Lits O. Sn [F CH33) In a recently-published synthesis of yohimbine (used in folk medicine as an aphrodisiac), the Diels-Alder reaction was used to form a new ring during a key step. 7 R N- -CVI O Spring OtBu Diels-Alder a. Draw a circle around the four atoms of the diene group in this molecule. b. Draw a square around the two atoms of the best dienophile group in this molecule. c. Draw the product of this reaction, ignoring stereochemistry.(a) Draw the major products A, B, and C for the Diels-Alder reactions below. A EtO2C. + В `CO̟Et
- What is the major product of the Diels-Alder reaction shown? COCH, H₂ O.XX H CH₂ Select one О А. OB. OC. OD. CÓ.CH, CH₂ A H H CH₂ CO,CH, H H CO,CH, CH3 ÇO₂CH3 CH3 H HDraw the structure of the product of the Diels-Alder reaction below. H3C || CH3OČ-c=c-čOCH3 ČH3to doinw 4. -> A) Which of the following is NOT a suitable diene for a Diels-Alder reaction? ultiple alkylation B) HBr CHEM 242 Activity 2.1-Conjugated-Systems D) 5. In the addition of HBr to 1,3-butadiene, one product is called the kinetic product and the other is called the thermodynamic product. doccriptors that apply to the kinetic product.
- Exp3: Diels-Alder reaction Why does cyclopentadiene regularly form a dimer? How to break the dimer into monomers? Does the diene in this reaction act as the nucleophile or the electrophile? Is the maleic anhydride a nucleophile or an electrophile in this reaction? Explain your reasoning.b) Which of these dienophiles gives the FASTEST reaction with cyclopentadiene? CH2 CH2 A. | В. C. | D. | Give structures for the major Diels-Alder product of the following reactions: 1,3- cyclohexadiene and tetrachloroethene 1,3-cylcohexadiene and fumaric acid, the trans isomer of maleic acid с.Question 11 of 30 > Identify the diene and dienophile that will yield the given product in a Diels-Alder reaction, and identify the second major product of the reaction, by dragging the appropriate structures to the boxes. O Macmillan Learning Diene: Dienophile: H3CO (CH3)3 SIO OSI(CH3)3 (CH3)3SIO OCH 3 (CH3)3SIO A OCH 3 OCH 3 product 2 not listed CH3 NO₂ (CH3)3SIO |||| CH3 NO₂ Product 1 OCH3 Answer Bank (CH3)3SIO (CH3)3 SIO NO₂ CH3 OCH 3 علم + CH3 .NO₂ CH3 Product 2 H3C (CH3)3SIO کمل کر OCH 3 no second product CH3 INO₂ NO₂
- Identify the diene and dienophile that will yield the given product in a Diels-Alder reaction, and identify the second major product of the reaction, by dragging the appropriate structures to the boxes. Product 1 Product 2 Diene: OCH3 NO2 CH3 + A (CH3);SiO Dienophile: Answer Bank H,CO. OCH, OCH3 mCH3 "NO2 CH3 no second product NO, Ósi(CH) (CH3),SiO (CH3),SiO OCH, „NO2 rOCH3 CH3 product 2 not listed "NO2 H.C NO2 (CH3), SiO (CH3),SiO CH3 OCH, NO2 CH3 (CH3),SiO (CH3)SiOUse arrows to predict the final favored product of the following Diels-Alder reaction. Use the step-wise mechanism to predict the final product of the following reaction. Show stereochemistry at stereogenic centers. NaBH4 CH;OH Use the step-wise mechanism to predict the product of the following reaction. (Excess) H.3. Predict the products of the following Diels-Alder reactions. a. NC a. 4. Identify the diene and dienophile used to make these Diel-Alder products. CN CH3 CN CH 3 CO₂CH3 CO₂CH3