Domanda del libro di testo
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (i) Br2
(k)
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Ch. 9 - Alkenes 2: Oxidation and Reduction
Mullins1st EditionOrganic Chemistry: A Learner Centered ApproachISBN: 9780137566471
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TOC.tableOfContents
- Ch. 2 - General Chemistry Translated: Finding the Electrons114
- Ch. 3 - Alkanes and Cycloalkanes: Properties and Conformational Analysis109
- Ch. 4 - Acids and Bases/Electron Flow144
- Ch. 5 - Chemical Reaction Analysis: Thermodynamics and Kinetics118
- Ch. 6 - Stereoisomerism: Arrangement of Atoms in Space112
- Ch. 7 - Principles of Green (Organic) Chemistry3
- Ch. 8 - Alkenes 1: Properties and Electrophilic Additions158
- Ch. 9 - Alkenes 2: Oxidation and Reduction150
- Ch. 10 - Alkynes: Electrophilic Addition and Redox Reactions101
- Ch. 11 - Properties and Synthesis of Alkyl Halides: Radical Reactions108
- Ch. 12 - Substitution and Elimination: Reactions of Haloalkanes172
- Ch. 13 - Alcohols, Ethers and Related Compounds: Substitution and Elimination239
- Ch. 14 - Structural Identification 1: Infrared Spectroscopy and Mass Spectrometry54
- Ch. 15 - Structural Identification 2: Nuclear Magnetic Resonance Spectroscopy93
- Ch. 16 - Metals in Organic Chemistry48
- Ch. 17 - Carbonyl Addition Reactions: Aldehydes and Ketones45
- Ch. 18 - Nucleophilic Acyl Substitution 1: Carboxylic Acids18
- Ch. 19 - Nucleophilic Acyl Substitution 2: Carboxylic Acid Derivatives39
- Ch. 20 - Enolates: Carbonyl Addition and Substitution13
- Ch. 21 - Conjugated Systems 1: Stability and Addition Reactions56
- Ch. 22 - Conjugated Systems 2: Pericyclic Reactions54
- Ch. 23 - Benzene 1: Aromatic Stability and Substitution Reactions64
- Ch. 24 - Benzene 2: Reactions Influenced by the Aromatic Ring62
- Ch. 25 - Amines: Structure, Reactions, and Synthesis27
- Ch. 26 - Amino Acids, Proteins, and Peptide Synthesis9
- Ch. 27 - Carbohydrates, Nucleic Acids, and Lipids54
Mullins1st EditionOrganic Chemistry: A Learner Centered ApproachISBN: 9780137566471Non è quello che usi tu?Cambia libro di testo
Capitolo 8, Problema 45k(vi)
Predict the product(s) that would result when the alkenes are allowed to react under the following conditions: (vi) 1. OsO4 2. NaHSO3
(k) 
Guida verificata passo dopo passo1
Identify the reaction type: The reagents OsO₄ (osmium tetroxide) followed by NaHSO₃ (sodium bisulfite) indicate a syn-dihydroxylation reaction. This reaction adds two hydroxyl (-OH) groups to the double bond of the alkene in a syn (same side) fashion.
Analyze the structure of the alkene: Determine the position of the double bond in the given alkene. The double bond is the site of reactivity where the hydroxyl groups will be added.
Understand the mechanism: OsO₄ reacts with the alkene to form a cyclic osmate ester intermediate. This intermediate ensures that the two hydroxyl groups are added to the same face of the double bond (syn addition).
Perform the second step: The cyclic osmate ester is then cleaved by NaHSO₃, which reduces the osmium and releases the diol (a molecule with two hydroxyl groups).
Predict the product: The final product will be a vicinal diol (two hydroxyl groups on adjacent carbons) with both hydroxyl groups added to the same side of the original double bond. Ensure stereochemistry is considered if the alkene is asymmetric.
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Alkene Reactivity
Alkenes are unsaturated hydrocarbons characterized by at least one carbon-carbon double bond. Their reactivity is primarily due to this double bond, which can undergo various addition reactions. Understanding how alkenes react with different reagents is crucial for predicting the products of these reactions.
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Percorso guidato
2:09
Alkene Metathesis Concept 1
Osmium Tetroxide (OsO₄) Reaction
Osmium tetroxide is a powerful oxidizing agent used in organic chemistry to convert alkenes into vicinal diols (glycols) through syn-dihydroxylation. This reaction involves the addition of hydroxyl groups (–OH) across the double bond, resulting in a compound with two adjacent alcohol groups. The stereochemistry of the product is important, as it retains the configuration of the starting alkene.
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05:09Heck Reaction
Sodium Bisulfite (NaHSO₃) Workup
Sodium bisulfite is often used in organic reactions as a reducing agent and for the purification of reaction products. In the context of the OsO₄ reaction, the NaHSO₃ workup helps to quench excess osmium and can also facilitate the isolation of the diol product. This step is essential for ensuring that the reaction is complete and that the desired product is obtained in a pure form.
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03:19Sodium Alkynide Alkylation
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