Alkenals

Structural formula of (E) -crotonaldehyde

Structural formula of ( Z ) -3-hexenal

The alkenals are a subgroup of the aldehydes . Their name and structure are derived directly from the alkenes , i. H. the aldehyde group also has a C CC double bond and straight or branched alkyl groups . They do not contain any other heteroatoms or further multiple bonds .

The C = C double bond can be located directly on the aldehyde group, then one speaks of α, β-unsaturated aldehydes. But you can also stand in isolation from it, e.g. B. in 3-Hexenal .

Typical representatives:

• The Propenal is the simplest representative.
• 2-butenal , 3-butenal
• Citronellal

literature

• Beyer / Walter : Textbook of Organic Chemistry , 19th edition, S. Hirzel Verlag, Stuttgart 1981, ISBN 3-7776-0356-2 , p. 199.