含甲基的仲醇
含 CH3CH(OH)- 结构的仲醇在碱性碘溶液中先氧化为甲基酮，再通过碘仿反应断裂。
- 官能团
- CH3CH(OH)R
- Also known as
- methyl-2-ols, methyl secondary alcohol, CH3CH(OH)R
概览
Secondary alcohols containing the CH3CH(OH)- motif.
Identifiers
- 官能团
- CH3CH(OH)R
- Also known as
- methyl-2-ols, methyl secondary alcohol, CH3CH(OH)R
化学标识符
- SMILES
- CC(C)O
Diagnostic tests
碘仿试验
- 试剂
- 碱性碘溶液
- 条件
- 先加入碘，再加入碱的水溶液，随后在水浴中温和加热。
- Positive observation
- 生成淡黄色三碘甲烷沉淀
- Negative observation
- 不生成淡黄色沉淀
- Interpretation
- 阳性结果支持存在含 CH3CH(OH)- 结构的仲醇；它先氧化为甲基酮，再发生断裂。
- 适用范围
- 含 CH3CH(OH)- 基团的醇可发生此反应。
- 来源说明
- 并非此类醇特有：乙醇、乙醛和甲基酮也会呈阳性。
- 证据
- 教材核心内容
Related compounds
Connected reactions
- Iodoform reaction: Methyl secondary alcohols → Triiodomethane 个产物
含 CH3CH(OH)- 结构的仲醇先氧化为甲基酮，再断裂生成三碘甲烷和减少一个碳原子的羧酸盐。
参考文献
- 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.
- PubChem Compound Summary: Propan-2-ol (CID 3776)National Center for Biotechnology Information · PubChem
Identity, molecular formula, molecular weight and aliases retrieved via PUG REST on 2026-09-08.
- PubChem Compound Summary: Butan-2-ol (CID 6568)National Center for Biotechnology Information · PubChem
Identity, molecular formula, molecular weight and aliases retrieved via PUG REST on 2026-09-08.
- PubChem Compound Summary: 1-Phenylethanol (CID 7409)National Center for Biotechnology Information · PubChem
Identity, molecular formula, molecular weight and selected English aliases retrieved via PUG REST on 2026-09-16. Chinese search names are curated nomenclature translations. Unspecified stereochemistry remains unspecified.