Process for preparing bis(2-pyridyl-1-oxide) disulfide

Details Process for preparing bis(2-pyridyl-1-oxide) disulfide Process for preparing bis(2-pyridyl-1-oxide) disulfide

1975-04-22

1976-05-04

Rotman, Alan L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2602948G, C07D21334

Patent

active

039547817

ABSTRACT:
An improved integrated route to bis(2-pyridyl-1-oxide) disulfide is provided wherein a solution of 2-mercaptopyridine-1-oxide formed by oxidizing 2-chloropyridine with peracetic acid to form a reaction mixture of 2-chloropyridine-1-oxide which is then mercaptized, is reacted with in situ generated hypochlorous acid at a pH in the range of 4-8, the hypochlorous acid being generated by chlorinating the solution of 2-mercaptopyridine-1-oxide in the presence of a base selected from the group consisting of an alkali metal hydroxide, carbonate, bicarbonate or combinations thereof.

REFERENCES:
patent: 2742476 (1956-04-01), Bernstein et al.
patent: 3700676 (1972-10-01), Damico
Klingsberg, Pyridine And Its Derivatives, Part 4, pp. 363, Interscience Publishers, (1964).
Klingsberg et al., J. Am. Chem. Soc., Vol. 71, pp. 2373-2374, July 1949.
King et al., J. Chem. Soc., London, pp. 873-877, (1939).

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