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Draw compound A that reacts with PBr3 to give 2,4-dimethylcyclopentane-1-carbonyl bromide.
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- What alkene is needed to synthesize each 1,2-diol using [1] OsO4 followed by NaHSO3 in H2O; or [2] CH3CO3H followed by −OH in H2O?Identify two alkenes that react with HBr to form 1-bromo-1-methylcyclohexane without undergoing a carbocation rearrangement.(a) Draw the products (including stereoisomers) formed when 2methylhex-2-ene is treated with HBr in the presence of peroxides. (b) Draw the products (including stereoisomers) formed when (S)-2,4dimethylhex-2-ene is treated with HBr and peroxides under similar conditions.
- When trans-2-chloro-1-cyclohexanol is treated with a base, cyclohexene oxide is the product. However, when cis-2-chloro-1-cyclohexanol is treated with a base, the product is cyclohexanone. Why doesn’t the cis isomer yield the oxide?Draw the structures of A, B, C and D in each step. NaH A- B H₂SO4 C 150 °C DH3C N- H₂NNH₂ H⭑ CH3 H3C IN CH3 Hydrazine reacts with 2,4-pentanedione to yield 3,5-dimethylpyrazole. Including protonations and deprotonations, the reaction takes 12 steps. Write out the mechanism on a sheet of paper and then draw the structure of the product of step 6. • You do not have to consider stereochemistry. •You do not have to explicitly draw H atoms. • Do not include lone pairs in your answer. They will not be considered in the grading. • In an elimination step, include the structure of the leaving group, but draw it in its own sketcher. Separate structures with + signs from the drop-down menu. ? Sn th Previous Next
- Give starting materials, reagents, and conditions that will produce each product.Nonconjugated , -unsaturated ketones, such as 3-cyclohexenone, are in an acid-catalyzed equilibrium with their conjugated , -unsaturated isomers. Propose a mechanism for this isomerization.Muscalure is the sex attractant of the common housefly. Flies are lured to traps filled with bait that contain muscalure and an insecticide. Eating the bait is fatal. How could you synthesize muscalure using 1-bromopentane as one of the starting materials?
- explain why cis-2-chloro-1-cyclohexanol yields a cyclohexanone but the trans isomer yields cyclohexene oxideBenzene undergoes electrophilic aromatic substitution reaction with alkyl halide in the presence of Lewis acid like AlCl3Compound X is treated with Br2 to yield meso-2,3-dibromobutane. Draw the structure of compound X.