Process for trifluoromethylation of aromatic and heterocyclic co

Details Process for trifluoromethylation of aromatic and heterocyclic co Process for trifluoromethylation of aromatic and heterocyclic co

1978-05-19

1980-02-12

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

204163R, B01J 110

Patent

active

041882741

ABSTRACT:
A decarboxylation process for coupling aromatic compounds wherein cyclic hydrocarbons and heterocyclic compounds having at least one labile ring hydrogen are reacted with the mono silver salts of aromatic carboxylic acids, or mono silver salts of unsaturated compounds such as .alpha.,.beta.-ethylenically unsaturated acid compounds, or silver trifluoroacetate, or the mono silver salts are reacted with themselves, by heating to temperatures of 100.degree. to 500.degree. C. at pressures of 0.1 to 10 atmospheres, or by irradiating the reactants with ultraviolet light of 200 to 400 nanometers at temperatures of -30.degree. to 100.degree. C. The resulting dimers, trimers, polysubstituted polyphenyls, polyheterocyclics and trifluoromethylated aromatics are useful as heat transfer media, as intermediates for high molecular weight polymers, pesticides and petroleum additives, and as scintillation counters.

REFERENCES:
patent: 3320142 (1967-05-01), Scherer et al.
Haszeldine, Fluorocarbon Derivatives, No. 1 (1956), p. 40.

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