Title:
PROCESS FOR THE PREPARATION OF FLUOROAROMATIC AND FLUOROHETEROAROMATIC COMPOUNDS
Document Type and Number:
Japanese Patent JPH03176427
Kind Code:
A
Abstract:
PURPOSE: To obtain the subject compounds in good yields, by reacting an aromatic or heteroaromatic amine with a nitrosyl polyfluoro salt and decomposing the product in situ.
CONSTITUTION: A corresponding aromatic or heteroaromatic amine is reacted with a nitrosyl polyfluoro salt, preferably a compound of the formula NOZFx (Z is B, Sb, P, Si or As; x is 4-6) at a temp. of -30 to 20°C, especially -15 to 5°C in an inert liquid. The resultant aromatic or heteroaromatic diazonium polyfluoro salt is decomposed in situ at a temperature of up to 250°C, especially at a temp. of 75 to 200°C, to give the objective compound. It is preferred to use 1.0 to 5.0 mol, especially 1.1 to 1.5 mol, of the nitrosyl polyfluoro salt per mol of the starting amine. The present process is suitable for obtaining a fluoro(hetero)aromatic compound from a (hetero)aromatic amine bearing one or two substituents at the o-position.
Inventors:
DEIBITSUDO JIYON MIRUNAA
Application Number:
JP31444190A
Publication Date:
July 31, 1991
Filing Date:
November 21, 1990
International Classes:
C07B39/00; C07C17/093; C07C17/12; C07C25/13; C07C37/62; C07C39/27; C07C41/22; C07C43/225; C07C43/29; C07C45/63; C07C46/00; C07C47/55; C07C49/697; C07C49/807; C07C50/24; C07C51/363; C07C63/70; C07C67/307; C07C69/65; C07C69/76; C07C201/12; C07C205/12; C07C209/74; C07C211/52; C07C231/12; C07C233/15; C07C253/30; C07D213/61; C07D285/14; C07D239/30; C07D311/18; C07D471/04; (IPC1-7): C07; C07B39/00; C07C17/22; C07C25/13; C07C37/62; C07C39/27; C07C41/22; C07C43/225; C07C43/29; C07C45/63; C07C46/00; C07C47/55; C07C49/697; C07C49/807; C07C50/24; C07C51/363; C07C63/70; C07C67/307; C07C69/65; C07C69/76; C07C201/12; C07C205/12; C07C209/74; C07C211/52; C07C231/12; C07C233/15; C07D213/61; C07D239/30
Attorney, Agent or Firm:
Toshio Yano (2 outside)
