Domanda del libro di testo
Which of the following molecules are chiral? (Hint: Draw each molecule and analyze it as illustrated in Worked Example 14.2.)
a. 3-Chloropentane
b. 2-Chloropentane
c.
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Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
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TOC.tableOfContents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187Non è quello che usi tu?Cambia libro di testo
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McMurry 8th EditionCh.14 Some Compounds with Oxygen, Sulfur, or a HalogenProblema 24
McMurry 8th EditionCh.14 Some Compounds with Oxygen, Sulfur, or a HalogenProblema 24Capitolo 14, Problema 24
The compound pictured here is a thiol. (a) Draw its line structure, and (b) draw the structure of the disulfide formed when it is treated with an oxidizing agent (yellow = S).
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Guida verificata passo dopo passo1
Step 1: Understand the structure of a thiol. A thiol is an organic compound containing a sulfhydryl group (-SH) attached to a carbon atom. The line structure of a thiol is typically drawn by representing the carbon backbone as a zigzag line, with the -SH group explicitly shown at the appropriate position.
Step 2: Analyze the given thiol structure in the image. Identify the carbon backbone and locate the position of the -SH group. Translate this into a line structure by representing the carbon atoms as vertices and omitting hydrogen atoms bonded to carbons for simplicity.
Step 3: Understand the oxidation of thiols. When two thiol molecules are treated with an oxidizing agent, they form a disulfide bond (-S-S-). This reaction involves the removal of hydrogen atoms from the -SH groups, allowing the sulfur atoms to bond directly to each other.
Step 4: Draw the disulfide structure. Take two copies of the thiol line structure and connect the sulfur atoms from each -SH group with a single bond (-S-S-). Ensure that the rest of the molecule remains unchanged.
Step 5: Verify the disulfide structure. Check that the sulfur atoms are correctly bonded to each other and that the remaining parts of the molecule are consistent with the original thiol structure. Ensure the drawing adheres to standard conventions for line structures in organic chemistry.
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Thiol Structure
A thiol is an organic compound that contains a sulfhydryl group (-SH) attached to a carbon atom. The general formula for thiols is R-SH, where R represents a hydrocarbon chain. Understanding the line structure of a thiol involves recognizing how carbon atoms are connected and where the -SH group is located within the molecule.
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0:53
Reactions of Thiols Example 1
Disulfide Bond Formation
A disulfide bond is formed when two thiol groups undergo oxidation, resulting in the linkage of two sulfur atoms (S-S). This reaction typically occurs in the presence of an oxidizing agent, which facilitates the removal of hydrogen atoms from the thiol groups. Disulfide bonds are crucial in stabilizing the three-dimensional structures of proteins.
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2:19Phosphodiester Bond Formation Concept 1
Oxidizing Agents
An oxidizing agent is a substance that facilitates oxidation by accepting electrons from another substance. In the context of thiols, common oxidizing agents include hydrogen peroxide and iodine, which can convert thiols into disulfides. Understanding the role of oxidizing agents is essential for predicting the outcome of chemical reactions involving thiols.
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1:49Alcohol Reactions: Oxidation Concept 1
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