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- 5. What is the major product of the following reaction? OH A) I B) || C) III D) all of the above E) none of the above H₂SO4 heat ||| LOSO3HQ3. Please provide a curved arrow mechanism that can explain the reaction shown below. i) LDA ii) aq. workup Me Me TBSO CI Q4. a) Identify the main products of the following cycloaddition reactions. In each case, provide a curved arrow mechanism that accounts for their formation. Me OH H Me b) Provide a clear drawing that explains the stereochemistry of the product.A) C) Predict the major product of the following transformation: .CO₂Et H₂O* Heat COET C₁0H 100 B) D)
- Which would be the major isolated organic product of the reaction shown? O O A B U O E LINH, A) An internal alkyne B) A cis- alkene C) A trans- alkene D) A terminal alkyne Br E) a different product or a mixture of more than one of the choices in equal amountsWhat would be the major product of the following reaction? O CH3 || C6H5C-CHCH3 + D20 A) B) C) D) E) O CD3 C6H5C-CHCH3 O CH3 1-1 C6H5C-CDCH3 O CH3 C6D5C-CDCH3 O CD3 | | C6H5C-CDCD3 OD - C6H5CDCHCH3 CH3 OD room temp. ?Which would be the major isolated organic product of the reaction shown? O A OB OC OD OE H₂C H₂ A) A chiral alkene B) a meso compound C) a racemic mixture D) A chiral alkane H₂ catalytic Pt or Pd. E) a different product or a mixture of more than one of the choices in equal amounts
- a) b) O₂N of Draw the product of the first step as well as the second step including stereoisomers OH 1) BH3, THF 2) H3O+ 2) 1) KCN/HCN aja. ,NEt3a) Draw the mechanism, using good curved arrow notation, for the reaction of 2-methyl-2- butene with bromine in water, omitting any stereochemistry: b) (R)-3-butyn-2-ol is treated with 2 mol of HBr, yielding optically active Compound A (C4H8OBr2). Draw the structure of the reaction with the correct stereochemistry. c) Name Compound A above, including stereochemistry. d) Compound A is treated with HBr to yield Compound B (C4H7Br3). The resulting solution is optically inactive. Draw the product(s) obtained and explain why there is a loss in optical activity.Identify the major product of the reaction of an alkene shown below. ||| 1. Hg(OAc)2, H2O 2. NaBH4, NaOH ....... ОН || IV ОН о, ОН
- Which of A to E shows the likely product obtained from the hydrogenation reaction shown below?Identify the best conditions to complete the SN2 reaction shown below. A) CH3I, THF B) CH3CH₂I, THE C) CH3CH₂CCNa, THF D) CH3CH₂CCNA, CH3OH E) KI, THFEach of the four reactions below undergoes an E2 mechanism. How many possible alkene products can be produced in each reaction? Hint: think about all major and minor possible products. O Hold and drag to reorder A) = 1 B) = 3 C) = 3 D) = 2 CI tBuOK A) CI NaOEt B) NaOEt C) CI CI NaOEt D) Ph