Diels-Alder Reaction (Butadiene + Ethylene)
C4H6 + C2H4 → C6H10
概要
A conjugated diene (1,3-butadiene) reacts with a dienophile (ethylene) in a [4+2] cycloaddition to form cyclohexene. This pericyclic reaction proceeds through a concerted mechanism with no intermediates, forming two new carbon-carbon bonds and a six-membered ring simultaneously.
参加者
| 役割 | 物質 | 係数 | 状態 |
|---|---|---|---|
| 反応物 | Ethylene C₂H₄ | 1 | (g) |
| 生成物 | Cyclohexane C₆H₁₂ | 1 | (l) |
日常の例
Otto Diels and Kurt Alder won the 1950 Nobel Prize for discovering this reaction, which is taught in every organic chemistry course.
産業上の重要性
ディールス-アルダー反応はステロイド、テルペン、アルカロイド、および多くの医薬品中間体の合成に利用されている。ポリマー化学でも高性能熱硬化性樹脂の製造に応用される。
特性
- タイプ
- Organic
- 可逆的
- はい
- エネルギー
- 発熱性
- ΔH
- -40.0 kJ/mol
関連する反応
Swern Oxidation
Oxidation of Secondary Alcohol to Ketone
Claisen Condensation (Ethyl Acetate)
Kolbe Electrolysis
Baeyer-Villiger Oxidation
Beckmann Rearrangement (Cyclohexanone Oxime)
Catalytic Hydrogenation of Ethylene
Condensation Polymerization (Nylon 6,6)
Cope Rearrangement
Epoxidation of Alkenes (mCPBA)
Frequently Asked Questions
What is the equation for Diels-Alder Reaction (Butadiene + Ethylene)?
The balanced equation is: C₄H₆ + C₂H₄ → C₆H₁₀.
What type of reaction is Diels-Alder Reaction (Butadiene + Ethylene)?
Diels-Alder Reaction (Butadiene + Ethylene) is a organic reaction. It is reversible under certain conditions.
Is Diels-Alder Reaction (Butadiene + Ethylene) exothermic or endothermic?
Diels-Alder Reaction (Butadiene + Ethylene) is exothermic (releases energy). The enthalpy change (ΔH) is -40.0 kJ/mol.