Process for the preparation of O-aminothiophenols

Details Process for the preparation of O-aminothiophenols Process for the preparation of O-aminothiophenols

1974-10-24

1976-01-06

Hines, R. V.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260306, C07C 8511

Patent

active

039313212

ABSTRACT:
Preparation and isolation in substance of ortho-aminothiphenols by the reduction of ortho-chloronitrobenzenes with hydrogensulfides or sulfides, subsequent neutralization in the presence of sulfites, hydrogensulfites or disulfites, separation and following purification of the crude products. The ortho-aminothiophenols are obtained in very good yields and with a high degree of purity. Oxydation to the disulfide compound is avoided by the processes of the invention.

REFERENCES:
patent: 1933217 (1933-10-01), Lantz
patent: 2894035 (1959-08-01), Latourette
Houben-Weyl, "Methoden dos Organischen Chem.," 4th Ed., Vol. 9, pp. 7-8 and 23-28 (1958).

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