Cannizzaro Reaction of Formaldehyde

2HCHO + NaOH → HCOONa + CH3OH

概述

In the Cannizzaro reaction, two molecules of a non-enolizable aldehyde undergo disproportionation in the presence of strong base. One molecule is oxidized to a carboxylate salt while the other is reduced to an alcohol. Formaldehyde disproportionates to sodium formate and methanol.

参与者

角色 物质 系数 状态
反应物 Sodium Hydroxide NaOH 1 (aq)
反应物 Formaldehyde CH₂O 2 (aq)
产物 Methanol CH₃OH 1 (l)

日常示例

The Cannizzaro reaction demonstrates that oxidation and reduction can occur simultaneously between identical molecules (disproportionation).

工业重要性

甲醛与其他醛的交叉坎尼扎罗反应生产如季戊四醇等多元醇,用于醇酸树脂和炸药(PETN)。

属性

类型
Organic
可逆
否
能量
放热
ΔH
-60.0 kJ/mol

相关反应

Epoxidation of Alkenes (mCPBA) Swern Oxidation Oxidation of Secondary Alcohol to Ketone E2 Elimination (Dehydrohalogenation) Claisen Condensation (Ethyl Acetate) Aldol Condensation of Acetaldehyde Kolbe Electrolysis Baeyer-Villiger Oxidation Beckmann Rearrangement (Cyclohexanone Oxime) Dehydration of Ethanol

Frequently Asked Questions

What is the equation for Cannizzaro Reaction of Formaldehyde?
The balanced equation is: 2HCHO + NaOH → HCOONa + CH₃OH.
What type of reaction is Cannizzaro Reaction of Formaldehyde?
Cannizzaro Reaction of Formaldehyde is a organic reaction.
Is Cannizzaro Reaction of Formaldehyde exothermic or endothermic?
Cannizzaro Reaction of Formaldehyde is exothermic (releases energy). The enthalpy change (ΔH) is -60.0 kJ/mol.