Title:
METHOD FOR USING A CARBAMOYL FLUORIDE AS FLUORINATING AGENT
Document Type and Number:
WIPO Patent Application WO2002055487
Kind Code:
A3
Abstract:
The invention concerns a method for using a carbamoyl fluoride as fluorinating agent. Said method consists in treating a derivative bearing a halogen-containing carbon, with a carbamoyl fluoride at a temperature not less than 70 DEG C and in maintaining the ratio between the sum of hydrofluoric acid (HF) and carbamoyl fluoride as well as between the sum of exchangeable halogen atoms, isocyanate functions and carbamoyl fluoride [(HF + carbamoyl fluoride)/(exchangeable halogen + isocyanate + carbamoyl fluoride)] at a value not more than 1.2; then in carrying out a catalysis process with tin, antimony and/or titanium salt. The invention is applicable to synthesis of fluorinated derivatives.
Inventors:
SAINT-JALMES LAURENT (FR)
SCHANEN VINCENT (FR)
GUIDOT GILBERT (FR)
KEMPF HUBERT (FR)
SCHANEN VINCENT (FR)
GUIDOT GILBERT (FR)
KEMPF HUBERT (FR)
Application Number:
PCT/FR2002/000075
Publication Date:
November 28, 2002
Filing Date:
January 10, 2002
Export Citation:
Assignee:
RHODIA CHIMIE SA (FR)
SAINT-JALMES LAURENT (FR)
SCHANEN VINCENT (FR)
GUIDOT GILBERT (FR)
KEMPF HUBERT (FR)
SAINT-JALMES LAURENT (FR)
SCHANEN VINCENT (FR)
GUIDOT GILBERT (FR)
KEMPF HUBERT (FR)
International Classes:
C07B39/00; C07B61/00; C07C263/16; C07C265/12; (IPC1-7): C07C263/16; C07C265/12; C07B39/00
Foreign References:
| DE1138391B | 1962-10-25 | |||
| EP0152310A1 | 1985-08-21 | |||
| EP0639556A1 | 1995-02-22 | |||
| US6074985A | 2000-06-13 | |||
| FR2647107A1 | 1990-11-23 |
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