Butenoic acid
Butenoic acid is any of three monocarboxylic acids with an unbranched 4-carbon chain with 3 single bonds and one double bond; that is, with the structural formula HO(O=)C–CH=CH–CH
2–H (2-butenoic) or HO(O=)C–CH
2–CH=CH–H (3-butenoic). All have the chemical formula C
3H
5COOH or C
4H
6O
2.
Isomers of butenoic acid
Crotonic acid
Isocrotonic acid
3-Butenoic acid
These compounds are technically mono-unsaturated fatty acids, although some authors may exclude them for being too short. The three isomers are:
- crotonic acid (trans-2-butenoic or (2E)-but-2-enoic acid)
- isocrotonic acid (cis-2-butenoic or (2Z)-but-2-enoic acid)
- 3-butenoic acid (but-3-enoic acid).[1][2]
See also
- Methacrylic acid, also C
3H
5COOH but branched like isobutene; a.k.a. isobutenoic acid - Butyric acid, C
3H
7COOH; a.k.a. butanoic acid
References
- M. A. Casado-Rodriguez, M. Sanchez-Molina, A. Lucena-Serrano, C. Lucena-Serrano, B. Rodriguez-Gonalez, Manuel Algarra, Amelia Diaz, M. Valpuesta, J. M. Lopez-Romero, J. PerezJuste, and R. Contreras-Caceres (2016): "Synthesis of vinyl-terminated Au nanoprisms and nanooctahedra mediated by 3-butenoic acid: Direct Au@pNIPAM fabrication with improved SERS capabilities". Nanoscale, volume 2016, issue 8, pages 4557-4564. doi:10.1039/C5NR08054A
- David B. Bigley and Michael J. Clarke (1982): "Studies in decarboxylation. Part 14. The gas-phase decarboxylation of but-3-enoic acid and the intermediacy of isocrotonic (cis-but-2-enoic) acid in its isomerisation to crotonic (trans-but-2-enoic) acid". Journal of the Chemical Society, Perkin Transactions 2, volume 2, issue 1, pages 1-6. doi:10.1039/P29820000001
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