CH3COCH2COCH3 Acetylacetone

CH3COCH2COCH3 Acetylacetone (2,4-pentanedione), 2 10 CH3C02C,H7 Isopropyl acetate, 3 48... 

CH3COCH2COCH3 + Na OC2H6 Na+ (CH3COCHCOCH3) + HOC2H5 The acetylacetone anion is a resonance hybrid ... 

The general features of a CW NMR spectrometer were described briefly in Exp. 32, and details about Fourier-transform NMR instruments are given in Exp. 43. For the spectrometer you are to use, more specific operating instructions will be provided by the instructor. Obtain several milliliters each of acetylacetone (CH3COCH2COCH3, M= 100.13, density = 0.98 gcm ) and ethyl acetoacetate(CH3CH20COCH2COCH3, M= 130.14, density = 1.03 g cm ). Prepare small volumes of two solvents and three solutions. 

CH3COCH2COCH3 2,4-Pentane-dione (acetylacetone), 2 10 CH3COOH Acetic acid, 2 119 (CN) Paracyanogen, 2 92n. 

The common name for pentane-2,4-dione, CH3COCH2COCH3, i acetylacetone... 

An original sol-gel process for preparing the (Ba, Sr)TiOs was presented by Yang et al. [101]. The reagent grade barium acetate (Ba(CHsCOO)), strontium acetate (Sr(CHsCOO)2), and tetrabutyl titanate (Ti(OC4H9)4) as raw materials, acetic acid and alcohol as solvents, and small amounts of acetylacetone (CH3COCH2COCH3) and acetic acid are added. The sol is relatively stable and becomes a gel in a few days. 

Pentane-2,4-dione (acetylacetone) CH3COCH2COCH3 [2310] Diethyl ketone C2H5COC2H5 [1156]... 

Paraffinic hydrocarbons do not possess acidic properties. These properties are manifested by aromatic hydrocarbons. For example, indene reacts as an acid with strong bases, its pX is estimated as 18-23 units. The acidity increases when some electron-acceptor group, e.g., is included into the composition of the hydrocarbon molecule. For example, for acetone pX = 20. The inclusion of two carbonyl groups into the molecule enhances its acidic properties. For example, for acetylacetone CH3COCH2COCH3 pX = 9, and for ketoester CH3COCH2COOC2H5 pX = 10. Acidic dissociation is characteristic of nitro compounds (for CH3NO2 pX = 10) and... 

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