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1. WO1992016491 - IMPROVED PROCESS FOR PREPARING PHENYL CHLOROACETATE

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[ EN ]
What is Claimed is:
1. A process for preparing phenyl
chloroacetate which comprises reacting phenol with 5 chloroacetyl chloride in the absence of a solvent and in the presence of a catalyst selected '.from the group consisting of organic ammonium salts, phosphonium
salts, amines, phosphines and amides.

° 2. The process of Claim 1 in which the
molar ratio of chloroacetyl chloride to phenol is
between 0.95 and 1.10.

3. The process of Claim 2 in which the
molar ratio of catalyst to phenol is between 0.001 and 0.100.

4. The process of Claim 3 in which the
catalyst is selected from the group consisting of
quaternary ammonium salts, quaternary phosphonium
salts, tertiary amines and their hydrogen halide
salts, dialkylaminopyridines and their hydrogen halide salts, tertiary phosphines and amides.

5. The process of Claim 4 in which the
chloroacetyl chloride is added to a mixture of the
phenol and the catalyst at a temperature from about 80 to 130*C.

6. The process of Claim 5 in which the
molar ratio of chloroacetyl chloride to phenol is
between 1.00 and 1.05.

7. The process of Claim 6 in which the molar ratio of catalyst to phenol is between 0.005 and 0.050.
8. The process of Claim 7 in which the catalyst is a quaternary ammonium salt or a quaternary phosphonium salt.

9. The process of Claim 8 in which the catalyst is a quaternary ammonium halide or a
quaternary phosphonium halide.

10. The process of Claim 9 in which the catalyst is tetramethylammonium chloride.

11. The process of Claim 9 in which the catalyst is tetrabutylphosphonium chloride.

12. The process of Claim 9 in which the catalyst is a N,N,N-trialkyl-2-oxo-2-phenoxyethanam-monium halide.