Zetena
| Zetena | |
|---|---|
 | |
| SMILES kanonikoa | [*C([*])=C=O&zoom=2.0&annotate=none 2D eredua] |
| MolView | [*C([*])=C=O 3D eredua] |
| Mota | carbonyl compound (en)  eta olefinic compound (en) |
| Identifikatzaileak | |
| Gmelin | 48002 |
Kimika organikoan zetenak dira formula orokorra RR'C=C=O duen konposatu organikoen taldea. Oso erreaktiboak dira eta ondorioz erraz deskonposatzen dira. Erabilpen zabala dute sintesi organikoan[1].
Zetenetatik sinpleenari, CH2=C=O formula duenari, ere zetena edo etenona deritzo[1].
Sintesia
Etenona azido azetikoaren deshidratazio termikoaz sintetizatzen da komertzialki.
Ordezkatutako zetenak azilo-kloruroetatik abiatuz prestatzen dira HCl galtzen den eliminazio-erreakzio bati segika. Beheko eskeman trietrilaminak base gisa jokatuz alfa posizioko karbonoari lotutako hidrogrenoa erauzten du kloroarekin batera.
Erreakzioak[2]
. Esterrak eratzea
Anhidridoak eratzea
Amidak eratzea
Azido karboxilikoak eratzea
Zikloadizioak
Erreferentziak
- ↑ a b Zetena. .
- ↑ (Ingelesez) Wiley-VCH, ed. (2003-03-11). Ullmann's Encyclopedia of Industrial Chemistry. (1. argitaraldia) Wiley doi:. ISBN 978-3-527-30385-4. (kontsulta data: 2024-09-23).
Kanpo estekak
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