伯醇
在扩展的脂肪族路径图中，伯醇参与氧化路线，也可由格氏路线生成。
- 官能团
- RCH2OH
- Also known as
- 伯醇
概览
Alcohols where the carbon bearing OH is attached to one carbon group.
A primary alcohol normally has a -CH2OH group. Controlled oxidation gives an aldehyde; further oxidation gives a carboxylic acid. Removing the aldehyde as it forms can limit further reaction. Methanol is the usual structural exception to the carbon-substituent counting rule.
Identifiers
- 官能团
- RCH2OH
- Also known as
- 伯醇
化学标识符
- SMILES
- CCO
性质
- 分类
- 应数羟基所连碳上的碳取代基，而非整个分子的碳原子总数。
- 氧化产物
- 氧化剂、含水量及产物是否及时移出，决定醛能否保留下来。
Diagnostic tests
酸性重铬酸盐氧化试验
- 试剂
- 酸化的 K2Cr2O7 水溶液
- 条件
- 向样品中加入用稀硫酸酸化的重铬酸钾水溶液，在水浴中温和加热。
- Positive observation
- 橙色溶液变绿
- Negative observation
- 溶液仍呈橙色
- Interpretation
- 阳性结果与伯醇氧化为醛相符；较强条件下可进一步氧化为羧酸。
- 适用范围
- 伯醇可产生这种氧化颜色变化。
- 来源说明
- 仅凭此结果不能区分伯醇、仲醇或醛。
- 证据
- 教材核心内容
Related compounds
Connected reactions
- Controlled oxidation: Primary alcohols → Aldehydes
伯醇经受控氧化可生成醛。
- Complete oxidation: Primary alcohols → Carboxylic acids
伯醇充分氧化生成羧酸。
- Reduction: Aldehydes → Primary alcohols
醛还原生成伯醇。
- Reduction: Carboxylic acids → Primary alcohols
羧酸还原生成伯醇。
- Carbonyl addition: Grignard reagents → Primary alcohols
格氏试剂与甲醛加成，经后处理得到伯醇。
- Grignard addition co reactant: Methanal → Primary alcohols
甲醛与格氏试剂反应，经酸性后处理得到伯醇。
参考文献
- Organic Chemistry: Oxidation of AlcoholsJohn McMurry · OpenStax Organic Chemistry · 2023
Supports functional-group chemistry used to curate the linked examples. Checked 2026-09-16; named examples are applications of textbook scope, without claimed experimental yields.
- Pearson Edexcel International Advanced Level Chemistry Practical GuidePearson Education Limited · Pearson qualifications · 2018
Official Pearson practical guidance for organic qualitative tests, including bromine water, acidified dichromate, silver nitrate, carbonyl reagents and the iodoform reaction.
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