51451-20-8

Basic information

• Product Name: Ethanone, 1,2-bis(2,5-dimethoxyphenyl)-2-hydroxy-
• CAS NO: 51451-20-8
• Molecular Formula: C18H20O6
• Molecular Weight: 332.353
• Mol File: 51451-20-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Ethanone, 1,2-bis(2,5-dimethoxyphenyl)-2-hydroxy-(CAS DataBase Reference)
• NIST Chemistry Reference: Ethanone, 1,2-bis(2,5-dimethoxyphenyl)-2-hydroxy-(51451-20-8)
• EPA Substance Registry System: Ethanone, 1,2-bis(2,5-dimethoxyphenyl)-2-hydroxy-(51451-20-8)

Safety Data

• Hazardous Substances Data: 51451-20-8(Hazardous Substances Data)

Upstream product

• 93-02-7 2,5-dimethoxybenzaldehyde 

Downstream Products

• 10365-13-6 1,2-bis(2,5-dimethoxyphenyl)ethane-1,2-dione 

Relevant articles and documents

Direct Observation of Ultrafast Decarboxylation of Acyloxy Radicals via Photoinduced Electron Transfer in Carboxylate Ion Pairs

Charge-transfer (CT) photoactivation of the electron donor-acceptor salts of methylviologen (MV2+) with carboxylate donors (RCO2-) including benzilates [Ar2C(OH)CO2-] and arylacetates (ArCH2CO2-) leads to transient [MV.+, RCO2.] radical pairs. Femtosecond time-resolved spectroscopy reveals that the photogenerated acyloxy radicals (RCO2.) rapidly lose carbon dioxide by C-CO2 bond cleavage, in competition with back-electron transfer to restore the original ion pair, [MV2+, RCO2-]. The decarboxylation rate constants for ArCH2CO2. lie in the range (1-2) × 109 s-1, in agreement with previous reports. In striking contrast, the C-CO2 bond scission in Ar2C(OH)CO2. occurs within a few picoseconds (kCC = (2-8) × 1011 s-1). The rate constants for decarboxylation of these donors approach those of barrier-free unimolecular reactions. Thus, real-time monitoring of the decarboxylation of benziloxy radicals represents the means for the direct observation of the transition state for C-C bond scission.