4-OXO-CYCLOHEXANECARBOXALDEHYDE Chemical Properties

Boiling point:

223 ºC

Density 

1.151

Flash point:

81 ºC

storage temp. 

Inert atmosphere,Store in freezer, under -20°C

Appearance

Colorless to light yellow Liquid

CAS DataBase Reference

96184-81-5(CAS DataBase Reference)

Safety Information

HS Code 

2914409000

4-OXO-CYCLOHEXANECARBOXALDEHYDE Usage And Synthesis

Synthesis

Step 2: Synthesis of 4-oxocyclohexanecarboxaldehyde; 8-(methoxymethylene)-1,4-dioxaspiro[4.5]decane (30 g, 0.16 mol) was dissolved in 1,4-dioxane (60 mL), H2O (30 mL) was added and concentrated. To this solution, HCl solution (120 mL, 1.4 mol) was slowly added at room temperature. The reaction mixture was stirred for 1 hour at room temperature. Upon completion of the reaction, liquid-liquid partition extraction was performed with ethyl acetate (150 mL) and H2O (150 mL). The organic layer was separated, dried with anhydrous Na2SO4 and concentrated under reduced pressure to give the crude product 4-oxocyclohexanecarboxaldehyde (15.3 g, 86.9% yield) as a colorless oil. The crude product was directly used in the next reaction without further purification.1H NMR (400 MHz, CDCl3) δ 9.71 (s, 1H), 2.64-2.62 (m, 1H), 2.41-2.29 (m, 5H), 2.20-2.15 (m, 2H), 1.94-1.89 (m, 2H).

References

[1] Patent: WO2008/94574, 2008, A2. Location in patent: Page/Page column 50
[2] Molecular Crystals and Liquid Crystals (1969-1991), 1985, vol. 131, p. 327 - 342
[3] Patent: US5238602, 1993, A
[4] Patent: US4565425, 1986, A
[5] Patent: US4915480, 1990, A

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