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Exploratory laser flash photolysis investigations of diphenylcarbene reactivity in supercritical fluids

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Abstract

Exploratory laser flash photolysis (LFP) experiments have been performed to determine the feasibility of study of carbene chemistry in supercritical fluids (SCF’s). Diphenylcarbene (Ph2C:) has been generated by 266 nm LFP of diphenyldiazomethane (Ph2CN2) in supercritical ethane, carbon dioxide and fluoroform. Diphenylcarbene was found: to react with ethane to form diphenylmethyl radical (Ph2C*H); to react with CO2 to most likely form diphenyloxiranone; and to be unreactive towards CHF3. The LFP results are discussed in terms of SCF solvent dynamics and the potential of SCF’s to influence carbene reactivity.

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  1. Radiation Laboratory, University of Notre Dame, 46556, Notre Dame, IN, USA

    J. E. Chateauneuf

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Chateauneuf, J.E. Exploratory laser flash photolysis investigations of diphenylcarbene reactivity in supercritical fluids. Res. Chem. Intermed. 20, 159–173 (1994). https://doi.org/10.1163/156856794X00171

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