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- 6. Predict the major product for the following Diels-Alder reaction. 7. Which diene and dienophile would react to give the following Diels-Alder product? Сон 8. Which diene and dienophile would react to give the following Diels-Alder product? Ill7) Which of the following compounds is the most reactive dienophile in a Diels-Alder reaction with 1,3-butadiene? A) CH2-CHOCH3 B)CH2 CHCHO C) CH3CH-CHCH3 D) (CH3)2C-CH2 E) CH2-CH2 Haiiawi, AUse 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.
- What starting material with these reagents will result in 1. NANH2 2. CH3CH2BR 3. H2, Lindlar's cat.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.Which group in each pair is assigned the higher priority in R,S nomenclature? а. — CDз, — СH b. - CH(CH3)2, - CH2OH c. - CH,CI, - CH,CH;CH,Br d. - CH,NH2, - NHCH,
- (a) Draw the major products A, B, and C for the Diels-Alder reactions below. A EtO2C. + В `CO̟Et9. For the following Diels-Alder products, propose the correct starting materials needed. D. a. b. C. fo{- ●●● Xox -select reagents: cyclopentanone Reagents a. C6H5CHO b. NaOH, ethanol c. Pyrrolidine, cat. Hj. d. H₂C=CHCN e. H3O+ f. LDA g. A) bg EtOC(=O)CO₂Et h. i. B) ka k. I. m. O: BrCH₂CH=CH₂ NatOEt, ethanol Br₂, H+ K+ t-BUO™ CH2(CO2Et)z heat C) jh CO₂Et D) Im
- to 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.PAOLLE D 9. А 10. OMe OMe B C CO₂Me CO₂Me A+Y C+W NHCOCH3 W A+X D+Y B+Z N-Ph COMe Y 11 ||| IV V 8. Rank the dienophiles numbered W to Z in order of decreasing reactivity in a typical Diels- Alder reaction. Z Rank the dienes numbered A to D in order of decreasing reactivity in a typical Diels-Alder reaction Arrange the combinations numbered I to V in order of decreasing HOMO-LUMO gap (largest to smallest gap).9. Which of the following dienes could react with acrylonitrile (dienophile in the reaction) in a Diels-Alder reaction? CH, A acrylonitrile B B. pCH, HC C CH Nal 3- Br