Thekey differencebetween aromatic and aliphatic aldehydes is that thearomatic aldehydes have their aldehyde functional group attached to anaromaticgroup whereas the aliphatic aldehydes do not have their醛functional group attached to an aromatic group.
醛是organic compoundshaving the functional group –CHO. Therefore, it has a carbonyl center (-C=O). The general formula of an aldehyde is R-CHO in which R group can be either aromatic or aliphatic. Hence, this R group determines the reactivity of this organic molecule. Aromatic aldehydes are less reactive than aliphatic aldehydes.
CONTENTS
1.Overview and Key Difference
2.What are Aromatic Aldehydes
3.What are Aliphatic Aldehydes
4.Side by Side Comparison – Aromatic vs Aliphatic Aldehydes in Tabular Form
5.概括
What are Aromatic Aldehydes?
Aromatic aldehydes are organic molecules having the –CHO functional group attached to an aromatic group. However, we refer to this name when there is an aromatic group somewhere in the aldehyde. Aromatic groups have a delocalized pi-electron cloud because of the conjugated pi bond system (alternating pattern of single bonds and double bonds).
Figure 01: Benzaldehyde
当功能组直接附着在芳环上时，它会促进羰基碳和芳族基团轨道之间的PI轨道重叠。换句话说，附着在芳香环上的羰基的存在扩展了Pi-Electron云的定位。这重新分布了与芳族环融合的氧气中氧气绘制性质的效果。因此，芳香环使醛组减少了亲电。换句话说，这些分子具有共振稳定。
What are Aliphatic Aldehydes?
Aliphatic aldehydes are organic compounds that have no aromatic rings attached to the aldehyde group. Moreover, these molecules do not have any aromatic ring attached to anywhere of the compound.
Figure 02: Isovalerylaldehyde
由于没有芳香环，因此这些分子没有共振稳定。因此，这些分子具有高度亲电 - 选择基，因此，该分子的反应性很高。
芳香和脂肪醛醛有什么区别？
Aromatic aldehydes are organic molecules having the –CHO functional group attached to an aromatic group. Aliphatic aldehydes are organic compounds which have no aromatic rings attached to the aldehyde group. This is the main difference between aromatic and aliphatic aldehydes.
Furthermore, aromatic aldehydes have resonance stabilization. Thus, the reactivity of these molecules is very less. Moreover, they are less electrophilic. But, aliphatic aldehydes have no resonance stabilization. Therefore, the reactivity is very high. In addition, the electrophilic nature is also very high.
概括– Aromatic vs Aliphatic Aldehydes
醛是in two types as aromatic aldehydes and aliphatic aldehydes. The key difference between aromatic and aliphatic aldehydes is that aromatic aldehydes have their aldehyde functional group attached to an aromatic group whereas aliphatic aldehydes do not have their aldehyde functional group attached to an aromatic group.
Reference:
1. “Why Are Aromatic Aldehydes Less Reactive than Aliphatic Aldehydes? | Socratic.” Socratic.org.Available here
Image Courtesy:
1.’Benzaldehyde 200’By Emeldir (talk) – Own work, (Public Domain) viaCommons Wikimedia
2.’Isovalerylaldehyde’By Yikrazuul – Own work, (Public Domain) viaCommons Wikimedia
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