1,2-Cyclohexanedione
- CAS NO.:765-87-7
- Empirical Formula: C6H8O2
- Molecular Weight: 112.13
- MDL number: MFCD00001648
- EINECS: 212-155-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-04-24 14:58:33
What is 1,2-Cyclohexanedione?
Chemical properties
clear yellow liquid after melting
The Uses of 1,2-Cyclohexanedione
1,2-Cyclohexanedione have been used as a substrate to study enzyme cyclohexane-1,2-dione hydrolase as a new tool to degrade alicyclic compounds.
The Uses of 1,2-Cyclohexanedione
1,2-Cyclohexanedione is utilized as a substrate to study enzyme cyclohexane-1,2-dione hydrolase, which is a new tool to degrade alicyclic compounds. It also acts as a specific reagent for arginine residues.
Definition
ChEBI: Cyclohexane-1,2-dione is a cyclohexanedione carrying oxo substituents at positions 1 and 2.
Reactions
1,2-Cyclohexanedione may effectively occupy vacant coordination sites and thus promote the present cycloisomerization[1]. Tanaka et al. research the catalytic cycloisomerization of 1,6- and 1,7-diynes leading to trienes and vinylpyrroles by using a cationic rhodium(I)/Segphos complex (2.5-10 mol %) and 1,2-cyclohexanedione (100 mol %).
Synthesis Reference(s)
Journal of the American Chemical Society, 73, p. 4658, 1951 DOI: 10.1021/ja01154a048
Tetrahedron Letters, 25, p. 603, 1984 DOI: 10.1016/S0040-4039(00)99949-0
The Journal of Organic Chemistry, 39, p. 3295, 1974 DOI: 10.1021/jo00936a034
References
[1] Ken Tanaka, Masao Hirano, Yousuke Otake. “Cationic Rhodium(I)/Segphos-Catalyzed Cycloisomerization of 1,6- and 1,7-Diynes in the Presence of 1,2-Cyclohexanedione.” Organic Letters 9 20 (2007): 3953–3956.
Properties of 1,2-Cyclohexanedione
| Melting point: | 34-38 °C (lit.) |
| Boiling point: | 193-195 °C (lit.) |
| Density | 1,118 g/cm3 |
| refractive index | 1.518-1.52 |
| FEMA | 3458 | 2-HYDROXY-2-CYCLOHEXEN-1-ONE |
| Flash point: | 184 °F |
| storage temp. | 2-8°C |
| solubility | Soluble in DMSO |
| form | Liquid After Melting |
| color | Clear yellow |
| Odor | at 10.00 % in dipropylene glycol. sweet acorn nut skin maple caramel brothy |
| Water Solubility | Soluble |
| JECFA Number | 424 |
| BRN | 507419 |
| CAS DataBase Reference | 765-87-7(CAS DataBase Reference) |
| NIST Chemistry Reference | c-hexane-1,2-dione(765-87-7) |
| EPA Substance Registry System | 1,2-Cyclohexanedione (765-87-7) |
Safety information for 1,2-Cyclohexanedione
| Signal word | Warning |
| Pictogram(s) |
![]() Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. |
Computed Descriptors for 1,2-Cyclohexanedione
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