| Identification | Back Directory | [Name]
Diisovalerylmethane | [CAS]
7307-08-6 | [Synonyms]
Diisovalerylmethane
2,7-diMethyloctane-3,5-dione
2,8-Dimethyl-4,6-nonanedione
2,8-DiMethylnonane-4,6-dione
4,6-Nonanedione, 2,8-dimethyl- | [Molecular Formula]
C11H20O2 | [MDL Number]
MFCD19301657 | [MOL File]
7307-08-6.mol | [Molecular Weight]
184.28 |
| Chemical Properties | Back Directory | [Boiling point ]
115-116℃ (20 Torr) | [density ]
0.9054 g/cm3 | [refractive index ]
1.4555 (589.3 nm 20℃) | [storage temp. ]
Inert atmosphere,Store in freezer, under -20°C | [pka]
9.50±0.10(Predicted) | [Appearance]
Colorless to light yellow Liquid |
| Hazard Information | Back Directory | [Synthesis]
N,N-dimethylformamide (DMF, 1 L) and potassium tert-butoxide (135.0 g, 1.2 mol) were heated to 50 °C under nitrogen atmosphere. Subsequently, 4-methyl-2-pentanone (100 ml, 50 g, 1 mol) was added to DMF and methyl 3-methylbutyrate (86.0 g, 0.75 mol) was slowly added through a dropping funnel. The reaction progress was monitored by gas chromatography (GC). After completion of the reaction, the mixture was cooled to room temperature and slowly neutralized with 20% sulfuric acid solution. After addition of water (300 ml), the mixture was layered. The organic layer containing 2,8-dimethylnonane-4,6-dione was separated and purified by vacuum distillation to give 40 g (43% yield) of pink oily product. | [References]
[1] Patent: JP2015/212297, 2015, A. Location in patent: Paragraph 0101; 0102
[2] Synthetic Communications, 2007, vol. 37, # 23, p. 4111 - 4115
[3] Patent: TWI612051, 2018, B. Location in patent: Paragraph 0188; 0190; 0191 |
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