Organic compounds -- part of the class 532-570 series – Organic compounds – Four or more ring nitrogens in the bicyclo ring system
Reexamination Certificate
2006-10-31
2006-10-31
Balasubramanian, Venkataraman (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Four or more ring nitrogens in the bicyclo ring system
C514S243000
Reexamination Certificate
active
07129349
ABSTRACT:
An improved method of producing 3-amino-1,2,4-benzotriazines using nitrobenzene or a derivative thereof, a guanidine salt and a base as reactants is provided. The method is carried out at a moderate reaction temperature without producing halide wastes derived from nucleophilic substitution and acid byproducts.
REFERENCES:
patent: 5175287 (1992-12-01), Lee et al.
Gribble Gordon W.
Moskalev Nikolai V.
Balasubramanian Venkataraman
Licata & Tyrrell P.C.
Trustees of Dartmouth College
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