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The temperature was regulated and controlled by means of a
thermocouple placed in a thermometric well in the furnace
wall. TCMB (0.125 mol) and the catalyst (2.5 mmol) were
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organic phase was dried with MgSO4 and analysed by GC.
The fluorinated products and the chlorinated reactant were
quantified by gas chromatography using an internal standard
quantitation method with decane as the internal standard.
The yield corresponds to the mol% of TCMB transformed
into chlorodifluoromethoxy-benzene plus trifluoromethoxy-
benzene. The difference between conversion and yield
corresponds to non-identified by-products. The chromato-
graph was a Varian 3800 equipped with 25 m BP1 capillary
column (SGE) with a temperature program from 50 8C to
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Acknowledgement
´
J. Salome thanks Rhodia and ANRT for the Ph.D. Cifre
fellowship.
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