(2,2-diphenylacetyl) 2,2-diphenylacetate

CAS NO.：1760-46-9
Empirical Formula: C28H22O3
Molecular Weight: 406.47
MDL number: MFCD00039636
SAFETY DATA SHEET (SDS)
Update Date: 2026-05-28 00:57:49

What is (2,2-diphenylacetyl) 2,2-diphenylacetate?

Preparation

To a flask containing 50 gm (0.236 mole) of diphenylacetic acid is added 50 gm (0.49 mole) of acetic anhydride and the solution refluxed for 2 hr. The excess acetic anhydride is removed by distillation and the thick brown liquid residue is treated with ether to cause crystallization of the anhydride product. The crystals are filtered, washed with cold ether, and dried to afford 43-44 gm (90-92%), m.p. 98°C. The product can also be distilled at 182°C (3.0 mm Hg).
Preparation of Diphenylacetic Anhydride

Properties of (2,2-diphenylacetyl) 2,2-diphenylacetate

Melting point:	96.0 to 100.0 °C
Boiling point:	182°C/3mmHg(lit.)
Density	1.0946 (rough estimate)
refractive index	1.5460 (estimate)
solubility	soluble in Toluene
form	powder to crystal
color	White to Almost white
EPA Substance Registry System	Diphenylacetic acid anhydride (1760-46-9)

Safety information for (2,2-diphenylacetyl) 2,2-diphenylacetate

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection.

Computed Descriptors for (2,2-diphenylacetyl) 2,2-diphenylacetate

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