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- Using molecular models as well as structural drawings, explain why trans-decalin is rigid and cannot ring-flip whereas cis-decalin can easily ring-flip.When (CH3CH2)3CBr is added to CH3OH at room temperature, the product is(CH3O)C(CH2CH3)3. Propose a mechanism(s) for the reactions leading to theseproducts and use curved arrows to show the movement of electrons.Thank you for the answer, would it be possible to follow the path I have attached as well srarting from methanol ---> CH3Br -----> CH3MgBr-------> (H3C)CH-CH2OH ----> E1 Isobutalene
- A compound with formula C6H10 gives the following HNMR peaks:1.1 ppm, t, 6H2.1 ppm, q, 4HDeduce the structure and draw it in the window below.The Ka1 of ascorbic acid is 7.94 x 10-5. Would you expect ascorbic acid dissolved in blood plasma (pH 7.35–7.45) to exist primarily as ascorbic acid or as ascorbate anion? Explain.For each compound, give the product(s) expected from (1) HgSO4>H2SO4@catalyzedhydration and (2) hydroboration–oxidation.(a) hex-1-yne
- The chiral catalyst (R)-BINAP-Ru is used to hydrogenate alkenes to give alkanes . The products are produced with high enantiomeric excess. An example is the formation of (S)-naproxen, a pain reliever. Q.How can one enantiomer of naproxen be formed in such high yield?Naturally occurring compounds called terpenoids, which we'll discuss in Section 27-5, are biosynthesized by a pathway that involves loss of CO2 from 3-phosphomevalonate 5-diphosphate to yield isopentenyl diphosphate. Use curved arrows to show the mechanism of this reaction.Cembrene, C20H32, is a diterpenoid hydrocarbon isolated from pine resin. Cembrene has a UV absorption at 245 nm, but dihydrocembrene (C20H34), the product of hydrogenation with 1 equivalent of H2, has no UV absorption. On exhaustive hydrogenation, 4 equivalents of H2 react, and octahydrocembrene, C20H40, is produced. On ozonolysis of cembrene, followed by treatment of the ozonide with zinc, four carbonylcontaining products are obtained: Propose a structure for cembrene that is consistent with its formation from geranylgeranyl diphosphate.