7.60 How many different alkenes will be produced when each of the following substrates is treated with a strong base? (a) 1-Chloropentane (b) 2-Chloropentane (c) 3-Chloropentane (d) 2-Chloro-2-methylpentane (e) 3-Chloro-3-methylhexane
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- Rank the alkenes shown in the ball-and-stick models (A–C) in order of increasing stability.draw 6 acyclic constitutional isomers of C6H12. Provide a name for each isomer, inclduing E-,Z-,R,S where appropriate(a) What alkene yields A and B when it is treated with Br2 in CCl4? (b) What alkene yields C and D under the same conditions?
- Dehydrohalogenation of 1-chloro-1-methylcyclopropane affords two alkenes (A and B) as products. Explain why A is the major product despite the fact that it contains the less substituted double bond.For alkenes A, B, C, and D: (a) Rank A—D in order of increasing heat of hydrogenation; (b) rank A—D in order of increasing rate of reaction with H2, Pd-C; (c) draw the products formed when each alkene is treated with ozone, followed by Zn, H2O.For alkenes A, B, and C: (a) Rank A, B, and C in order of increasing heat of hydrogenation; (b) rank A, B, and C in order of increasing rate of reaction with H2, Pd-C; (c) draw the products formed when each alkene is treated with ozone, followed by Zn, H2O.
- Friedel–Crafts alkylation of benzene with (R)-2-chlorobutane and AlCl3 affords sec-butylbenzene.a. How many stereogenic centers are present in the product?b. Would you expect the product to exhibit optical activity? Explain, with reference to the mechanism.Suzuki coupling of aryl iodide A and vinylborane B affords compound C, which is converted to D in the presence of aqueous acid. Identify compounds C and D and draw a stepwise mechanism for the conversion of C to D.Five isomeric alkanes (A–E) having the molecular formula C6H14 are each treated with Cl2 + hv to give alkyl halides having molecular formula C6H13Cl. A yields five constitutional isomers. B yields four constitutional isomers. C yields two constitutional isomers. D yields three constitutional isomers, two of which possess stereogenic centers. E yields three constitutional isomers, only one of which possesses a stereogenic center. Identify the structures of A–E.
- Draw the products formed when both cis- and trans-but-2-ene are treated with a peroxyacid followed by -OH (in H2O).Explain how these reactions illustrate that anti dihydroxylation is stereospecic.A chiral alkyne A with molecular formula C6H10 is reduced with H2 and Lindlar catalyst to B having the R conguration at its stereogenic center. What are the structures of A and B?For the following molecule: A. Draw both chair conformations and label substitutents as axial or equatorial B. Indicate which conformation is more stable using equilibrium arrows C. Predict the major product of the reaction with sodium methoxide D. Predict the major product of the reaction with potassium tert-butoxide