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- A difficult problem in the synthesis of PGF2α is the introduction of the OH group at C15 in the desired configuration. a. Label this stereogenic center as R or S. b. A well known synthesis of PGF2α involves reaction of A with Zn(BH4)2, a metal hydride reagent similar in reactivity to NaBH4, to form two isomeric products, B and C. Draw their structures and indicate their stereochemical relationship. c. Suggest a reagent to convert A to the single stereoisomer X.Using the Woodward–Hoffmann rules, predict the stereochemistry of belowreaction. a [6 + 4] thermal cycloadditionStereoisomers of α-bromocinnamic acid: draw the reaction mechiansim with arows for the dehydrobromination of 2,3-dibromo-3-phenylpropanoic acid with ethanol and KOH to produce (Z)-α-bromocinnamic acid and (E)-α-bromocinnamic acid. Also draw the transition state for The (Z)-isomer syn-periplanar transition state and anti-periplanar transition state of the (E)-isomer.
- Benzene is one of the compounds used as octane enhancers in unleaded gasoline. It is manufactured by thecatalytic conversion of acetylene to benzene: 3C2 H2(g) ⇌ C6 H6(g). Which value of Kc would make this reactionmost useful commercially? Kc ≈ 0.01, Kc ≈ 1, or Kc ≈ 10. Explain your answer1- Chloro-1,2-diphenyletane can undergo E2 elimination to give either cis- or trans-1,2-diphenylethylene (stilbene). Draw New man projections of the reactive conformations leading to both possible products, and suggest a reason why trans alkene is the major product?A difficult problem in the synthesis of PGF2α is the introduction of the OH group at C15 in the desired conguration.a. Label this stereogenic center as R or S.b. A well known synthesis of PGF2α involves reaction of A with Zn(BH4)2, a metal hydride reagent similar in reactivity to NaBH4, to form two isomeric products, B and C. Draw their structures and indicate their stereochemical relationship.c. Suggest a reagent to convert A to the single stereoisomer X.
- A difficult problem in the synthesis of PGF2α is the introduction of the OH group at C15 in the desired configuration. a. Label this stereogenic center as R or S. b. A well-known synthesis of PGF2α involves reaction of A with Zn(BH4)2, a metal hydride reagent similar in reactivity to NaBH4, to form two isomeric products, B and C. Draw their structures and indicate their stereochemical relationship. d. Suggest a reagent to convert A to the single stereoisomer X.Friedel–Crafts alkylation of benzene with (R)-2-chlorobutane and AlCl3 affords sec-butylbenzene. Would you expect the product to exhibit optical activity? Explain, with reference to the mechanism.What is the major product obtained from treating an excess of each of the following compounds with Cl2 in the presence of ultraviolet light at roomtemperature? Disregard stereoisomers.
- (1) Draw or illustrate the stereochemistry of the product between 1-Ethyl-1-cyclopentene and Br2 and (2) illustrate the reaction mechanism.The molecule shown is used in the chemical industry to dilute hydraulic fluids. Draw the major organic product when the molecule reacts with thionyl chloride. Include wedge‑and‑dash bonds to show the stereochemistry of the productOptically active 2-bromobutane undergoes racemization on treatment with a solution of KBr. Give a mechanism for this racemization
