Process for the preparation of 5-amino-3-chlorosulfonyl-1,2,4-tr

Details Process for the preparation of 5-amino-3-chlorosulfonyl-1,2,4-tr Process for the preparation of 5-amino-3-chlorosulfonyl-1,2,4-tr

1989-11-06

1991-04-16

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D24912

Patent

active

050083961

ABSTRACT:
5-Amino-3-chlorosulfonyl-1,2,4-triazole is prepared by the chlor-oxidation of 5-amino-3-mercapto-1,2,4-triazole. The process is characterized by the preformation of disulfide from the mercaptan prior to treatment with chlorine. The 5-amino-3-chlorosulfonyl-1,2,4-triazole reaction mixture can be directly reacted with substituted anilines to prepare N-(3-(((aryl)amino)sulfonyl)-1H-1,2,4-triazol-5-yl)amines which are useful intermediates for the manufacture of herbicides.

REFERENCES:
patent: 4734123 (1988-03-01), Monte
patent: 4755212 (1988-07-01), Kleschick et al.
patent: 4889553 (1989-12-01), Rowson et al.
March, "Advanced Organic Chemistry Reactions, Mechanisms and Structure" 2nd ed. (1977) pp. 1110-1111, 1115.

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