Method of preparing fungicidal intermediates
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United States of America Patent
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Feb 25, 1992
Grant Date -
N/A
app pub date -
Jun 14, 1990
filing date -
Jun 21, 1989
priority date (Note) -
Expired
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Abstract
N-n-propyl-N-(2,4,6-trichlorophenoxy)-ethyl amine is prepared by reacting 2-phenoxy ethanol with thionyl chloride in the presence of a catalytic amount of tetraalkyl ammonium halide optionally in the presence of a solvent to form 2-phenoxy ethyl chloride; selectively chlorinating the 2-phenoxy ethyl chloride with chlorine at a temperature from 0.degree. C. to 60.degree. C. in the presence of a catalytic amount if urea to form 2-(2,4,6-trichlorophenoxy)-ethyl chloride; reacting the 2-(2,4,6-trichlorophenoxy)-ethyl chloride with n-propyl amine at a temperature of from 20.degree. C. to 150.degree. C., optionally in the presence of water; and recovering the N-n-propyl-N-2-(2,4,6-trichlorophenoxy)-ethyl amine formed.
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