Domanda del libro di testo
Give appropriate names for the following compounds:
(c)
(d)
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Ch. 21 - Carboxylic Acid Derivatives
Wade9th EditionOrganic ChemistryISBN: 9780135213728
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TOC.tableOfContents
- Ch.1 - Structure and Bonding107
- Ch. 2 - Acids and Bases; Functional Groups115
- Ch.3 - Structure and Stereochemistry of Alkanes100
- Ch.4 - The Study of Chemical Reactions99
- Ch.5 - Stereochemistry93
- Ch.6 - Alkyl Halides; Nucleophilic Substitution118
- Ch. 7 - Structure and Synthesis of Alkenes; Elimination158
- Ch.8 - Reactions of Alkenes171
- Ch.9 - Alkynes91
- Ch.10 - Structure and Synthesis of Alcohols143
- Ch.11 - Reactions of Alcohols104
- Ch. 12 - Infrared Spectroscopy and Mass Spectrometry22
- Ch. 13 - Nuclear Magnetic Resonance Spectroscopy45
- Ch. 14 - Ethers, Epoxides, and Thioethers72
- Ch. 15 - Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy89
- Ch. 16 - Aromatic Compounds74
- Ch. 17 - Reactions of Aromatic Compounds126
- Ch. 18 - Ketones and Aldehydes193
- Ch. 19 - Amines129
- Ch. 20 - Carboxylic Acids77
- Ch. 21 - Carboxylic Acid Derivatives141
- Ch. 22 - Condensations and Alpha Substitutions of Carbonyl Compounds175
- Ch. 23 - Carbohydrates and Nucleic Acids93
- Ch. 24 - Amino Acids, Peptides, and Proteins54
Capitolo 21, Problema 42n,o
Draw structures to correspond with the following common and systematic names:
(n) trichloroacetic anhydride
(o) ethyl N-methyl carbamate
Guida verificata passo dopo passo1
Step 1: Understand the structure of trichloroacetic anhydride. An anhydride is formed by the condensation of two carboxylic acids. Trichloroacetic acid has the formula Cl₃C-COOH. To form the anhydride, two molecules of trichloroacetic acid lose a water molecule, resulting in the structure Cl₃C-CO-O-CO-CCl₃.
Step 2: Draw the structure of trichloroacetic anhydride. Start by drawing two trichloroacetic acid molecules (Cl₃C-COOH). Then, connect the carbonyl groups (C=O) of each molecule via an oxygen atom (O) to form the anhydride bond.
Step 3: Understand the structure of ethyl N-methyl carbamate. A carbamate is a functional group with the general structure R-O-C(=O)-NR₂. In this case, the R group attached to the oxygen is an ethyl group (CH₃CH₂-), and one of the substituents on the nitrogen is a methyl group (CH₃).
Step 4: Draw the structure of ethyl N-methyl carbamate. Start with the carbamate backbone (R-O-C(=O)-NR₂). Replace the R group attached to the oxygen with an ethyl group (CH₃CH₂-), and replace one of the R groups on the nitrogen with a methyl group (CH₃). The final structure is CH₃CH₂-O-C(=O)-NHCH₃.
Step 5: Verify the structures. Ensure that all atoms have the correct number of bonds and that the functional groups match the names provided. For trichloroacetic anhydride, confirm the presence of two trichloromethyl groups (Cl₃C-) and the anhydride bond. For ethyl N-methyl carbamate, confirm the ethyl group, carbamate group, and N-methyl substitution.
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Anhydrides
Anhydrides are compounds formed from the removal of water from an acid. In organic chemistry, they often result from the condensation of two carboxylic acids or a carboxylic acid and an alcohol. Trichloroacetic anhydride, for example, is derived from trichloroacetic acid and is used in various chemical reactions, including acylation.
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Anhydride Nomenclature
Carbamates
Carbamates are esters of carbamic acid, characterized by the presence of the -NH(C=O)O- functional group. They are commonly used in pharmaceuticals and pesticides. Ethyl N-methyl carbamate, specifically, is an example where an ethyl group is attached to the oxygen of the carbamate, influencing its chemical properties and reactivity.
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Percorso guidato
1:38Reactions of Amino Acids: Hydrogenolysis Concept 2
Nomenclature in Organic Chemistry
Nomenclature in organic chemistry refers to the systematic method of naming chemical compounds based on their structure and functional groups. The IUPAC (International Union of Pure and Applied Chemistry) system provides rules for naming compounds, ensuring that each name conveys specific information about the molecular structure, such as the presence of functional groups and the arrangement of atoms.
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