Concept explainers
Stanozolol is an anabolic steroid that promotes muscle growth. Although stanozolol has been used by athletes and body builders, many physical and psychological problems result from prolonged use and it is banned in competitive sports.
a. Explain why the nitrogen heterocycle—a pyrazole ring—is aromatic.
b. In what type of orbital is the lone pair on each
c. Draw all reasonable resonance structures for stanozolol.
d. Explain why the
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Organic Chemistry (6th Edition)
- INSTRUCTIONS: Choose the letter of the BEST answer for each item. 1. How many lone pairs are involved in sustaining the conjugation of pyridine? A. One B. Two C. Three D. Four 2. Benzopyrene, naphthalene and pyrene are members of these group of aromatic compounds: A. Benzenoid aromatic compounds B. Non-benzenoid aromatic compounds C. Heterocyclic aromatic compounds D. Heteronuclear compounds 3. What type of aromatic compound is pyridine? A. Heterocyclic aromatic compound B. Benzenoid aromatic compound C. Non-benzenoid aromatic compound D. Homonuclear cyclic compound 4. What property of aromatic rings prevent the involvement of the conjugated structure to addition reactions? A. Radical stabilization B. Resonance stability C. Inductive effect D. Aromatic effect 5. Which electrophilic aromatic substitution reaction is described when aniline is transformed into para-aminotolouene? A. Nitration B. Friedel Crafts alkylation C. Oxidation D. Halogenation 6. What type of relationship does…arrow_forward1.Discuss how aromaticity is affected in large ring compounds. 2. Discuss the aromaticity of heterocyclic compounds. 3. Discuss the aromaticity of polynuclear hydrocarbonsarrow_forwardWhich of the following best describe the unique characteristic of aromatic compounds? a. Their high reactivity b. Their high stability c. Their toxicity d. Their unique structure.arrow_forward
- a. Consider the structure drawn below. Assuming the structure is planar, would you predict this compound to be aromatic, anti-aromatic, or non- aromatic? (Note: each nitrogen has a lone pair and, as drawn, each gallium has 6 valence electrons.) Ga .CI Ga CI b. Explain your answer for part a: Which rules of aromaticity does the compound obey or disobey?arrow_forwardF. F C. 2. F F draw structurearrow_forwardWhich of the following statements is incorrect: aromatic compounds... a. Are cyclic b. Are generally less reactive than similarly substituted alkenes c. Are planar O d. Have 4n n-electrons Benzene or the other aromatic species all have high "pi" electron density inside the aromatic ring. Select one: True O Falsearrow_forward
- 3. How do you convert the following compounds to aromatic compounds? a. b. -CI -OHarrow_forwardWhich molecules below are aromatic? A. B. Structure D Structure B Structure A Structure C Structure E D. E.arrow_forward41. Draw the structure of a hydrocarbon that has six carbon atoms and a. three vinylic hydrogens and two allylic hydrogens. b. three vinylic hydrogens and one allylic hydrogen. c. three vinylic hydrogens and no allylic hydrogens.arrow_forward
- select two. Which statements correspond to: ESCITALOPRAM (antidepressant) a. It induces tranquility and somnolence to the patient. b. An agent that regulates re-uptake of serotonin in the brain. c. Its structure has benzonitrile, flurobenzene and a tertiary amine. d. An agent that is indicated to patients with hives and dermatitis.arrow_forward1. Cite some reactions in which formaldehyde behaves differently from other aldehydes. 2. Give some biological and medical applications of: a. formalin b. chloral c. urotropinearrow_forward1. Consider the following common organic molecules and answer the questions below (A-J) by writing the number of the molecule(s) next to the question. CH3 CH3 CH3 H;C" CH2 2. muscone 3. nicotine 1. limonene H;CCH3 CH3 CH3 H;C, CH3 0-CH3 H-O ČO,H 4. ibuprofen 5. camphor 6. vanillin ÇH3 HO, H;C HO. но- H H;C H3C" CH3 7. aspirin 8. geraniol 9. acetaminophenarrow_forward
- World of Chemistry, 3rd editionChemistryISBN:9781133109655Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCostePublisher:Brooks / Cole / Cengage Learning