C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 263/04 (2006.01) C07C 265/12 (2006.01)
Patent
CA 2377753
The invention concerns a method for dehydrogenofluorination for transforming an aromatic carbamoyl fluoride into the corresponding isocyanate. Said method is characterised in that it consists in subjecting said carbamoyl fluoride to a temperature not less than 80 DEG C, in a solvent and at said temperature, said carbamoyl fluoride is in dissolved state or finely dispersed in the solvent. The invention is applicable to organic synthesis.
La présente invention a pour objet un procédé de déshydrogénofluoration permettant de passer d'un fluorure de carba-moyle aromatique à l'isocyanate correspondant. Ce procédé est caractérisé par le fait que l'on soumet ledit fluorure de carbamoyle à une température au moins égale à 80°C, dans un solvant et qu'à ladite température, ledit fluorure de carbamoyle est à l'état dissous ou finement dispersé dans le solvant. Application à la synthèse organique.
Guidot Gilbert
Rochin Christophe
Saint-Jalmes Laurent
Rhodia Chimie
Robic
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