METOD OF MANUFACTURING TETRAFLUOROBORIC ACID DIAZONIUM IN DILUTE AQUEOUS SOLUTION

Title:

METOD OF MANUFACTURING TETRAFLUOROBORIC ACID DIAZONIUM IN DILUTE AQUEOUS SOLUTION

Document Type and Number:

Japanese Patent JPS5618950

Kind Code:

A

Abstract:

1. Process for the preparation of diazonium tetrafluoroborates of the formula (I) see diagramm : EP0022959,P4,F1 in which : R and R', independently of one another, represent alkyl, halogen, SCF3 or OCF3 , by reacting anilines of the formula (II), or acid addition salts thereof, see diagramm : EP0022959,P4,F4 in which : R and R' have the meaning indicated above, with sodium nitrite in aqueous tetrafluoboric acid, which is characterised in that a 30 to 200% excess of tetrafluoboric acid per mol of aniline employed is used in a very dilute aqueous solution.

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Inventors:

HERUMAN HAAGEMAN
EERITSUHI KURAUKE

Application Number:

JP9405780A

Publication Date:

February 23, 1981

Filing Date:

July 11, 1980

Export Citation:

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Assignee:

BAYER AG

International Classes:

C07C17/093; C07C25/13; C07C323/48; C07C67/00; C07C241/00; C07C245/20; C07C313/00; C07F5/02; (IPC1-7): C07C113/04; C07C149/42

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