Concept explainers
(a)
Interpretation:
The structural formula for 1-phenyl-2-amino-1-propanol should be drawn.
Concept introduction:
The spatial arrangement of atom within a compound that are joined together is identified with the help of structural formula.
(b)
Interpretation:
The numbers of stereocenters present in the given molecule and the number of stereoisomers is possible for it should be determined.
Concept introduction:
The spatial arrangement of atom within a compound that is joined together is identified with the help of structural formula.
In chiral organic molecules, the tetrahedral carbon atom is bound to four different groups. Such a carbon is known as stereocenter.
For a molecule with n number of stereocenters, the maximum number of possible stereoisomers is 2n.
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Student Solutions Manual for Bettelheim/Brown/Campbell/Farrell/Torres' Introduction to General, Organic and Biochemistry, 11th
- 16-54 Several poisonous plants, including Atropa belladonna, contain the alkaloid atropine. The name “belladonna” (which means “beautiful lady”) probably comes from the fact that Roman women used extracts from this plant to make themselves more attractive. Atropine is widely used by ophthal mologists and optometrists to dilate the pupils for eye examination. Classify the amino group in atropine as primary, secondary, or tertiary. Locate all stereocenters in atropine. Account for the fact that atropine is almost insoluble in water (1 g in 455 mL of cold water) but atropine hydrogen sulfate is very soluble (1 g in 5 mL of cold water). Account for the fact that a dilute aqueous solution of atropine is basic (pH approximately 10.0).arrow_forward18-18 Propanoic acid and methyl acetate are constitutional isomers, and both are liquids at room temperature. One of these compounds has a boiling point of 141°C; the other has a boiling point of 57°C. Which compound has which boiling point? Explain.arrow_forward16-28 Following is the structural formula of metformin, the hydrochloride salt of which is marketed as the antidiabetic medication Glucophage. Metformin was introduced into clinical practice in the United States in 1995 for the treatment of type 2 diabetes. More than 25 million prescriptions for this drug were written in 2000, making it the most commonly prescribed brand-name diabetes medication in the nation. NH NH H3(\ 3 N N Nh2ch3 h Metformin Complete the Lewis structure for metformin, showing all valence electrons. Which nitrogen is the most likely site of protonation? Draw the structural formula of Glucophage.arrow_forward
- 16-19 2-Me thy 1 propane (bp -12°C), 2-propanol (bp 82°C), and 2-propanamine (bp 32°C) all have approximately the same molecular weight, yet their boiling points are quite different. Explain the reason for these differences.arrow_forward17-54 Following is the structure of immunosuppressant FK-506, a molecule shown to disrupt calcineurin-mediated signal transduction in T-lymphocytes. (a) There are three carbon—carbon double bonds present in this molecule. Which of the three has the potential for cis/trans isomerism? Assign a cis or trans con?guration to each carbon-carbon double bond that has this possibility. (b) How many stereocenters are present in this molecule? How many stereoisomers are possible for it? (c) Are there any aromatic components in this molecule? (d) Consider the two carbon atoms marked with asterisks. Assign an R or S con?guration of each stereocenter. (e) Because of the presence of a 21-member ring, this molecule is described as a macrocycle. This ring is fashioned by three types of bonds, several carbon-carbon bonds, one ester, one hemiacetal, and one amide. Locate the ester and the hemiacetal. (f) Draw the structural formula of the long chain compound that would result if the hemiacetal were to be cleaved to an alcohol and a carbonyl group.arrow_forward17-67 Draw structural formulas for these compounds. (a) 1-Chloro-2-propanone (b) 3-Hydroxybutanal (c) 4-Hydroxy-4-methyl-2-pentanone (d) 3-Methyl-3-phenylbutanal (e) 1,3-Cyclohexanedione (f) 5-Hydroxyhexanalarrow_forward
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- 16-13 Classify each amino group as primary, secondary, or tertiary and as aliphatic or aromatic. Serotonin (a neurotransmitter) Diphenhydramine (the hydrochloride salt is the antihistamine Benadryl) Lysine (an amino acid)arrow_forward13-27 Define autoxidation.arrow_forwardProvide the IUPAC name of (CH3)3CCH₂CH₂NHCH₂CH3. N-methyl-3-ethyl-1-butanamine N-ethyl-3,3-dimethyl-1-butanamine N,N-dimethyl-1-pentanamine octanaminearrow_forward
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