Process for the manufacture of bromopyridines

Details Process for the manufacture of bromopyridines Process for the manufacture of bromopyridines

1974-06-17

1976-08-10

Moatz, Harry I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2602955R, 260296R, 260297R, 71 94, C07D21326, C07D21348, C07D21361, C07D21302

Patent

active

039741664

ABSTRACT:
A novel process for the preparation of 2,4-dibromo-, 2,6-dibromo- and 2,4,6-tribromopyridines, and the new bromopyridines to be obtained therewith, are disclosed. The novel process comprises treating 2,4-dichloro-, 2,6-dichloro- and 2,4,6-trichloropyridines, in an anhydrous organic medium, with gaseous HBr at temperatures between 80.degree. and 130.degree.C, said process being both simple and economical.

REFERENCES:
patent: 3694332 (1972-09-01), Parker
patent: 3809695 (1974-05-01), Steinmetz et al.
patent: 3849422 (1974-11-01), Weis
Klingsberg, Heterocyclic Compounds, Pyridine and Derivatives, part 2, p. 341, (1961).
Palmer, Heterocyclic Compounds, p. 40, (1967).
Hertog, Chem. Abstracts, vol. 46, col. 8654i-55a-b, (1952).

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