Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-11-15
2005-11-15
Richter, Johann (Department: 1626)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
active
06965037
ABSTRACT:
Disclosed is a method for producing an aminocarbazole by catalytically reducing a nitrocarbazole, wherein as a catalyst is used an active nickel-based catalyst prepared by contacting a nickel-based catalyst with an alkali and an iron compound under a hydrogen gas or inert gas atmosphere in an inert solvent, and according to the method of the present invention, decrease in reaction speed, decrease in yield of a product or the like depending upon the lot of the starting nitrocarbazoles can be prevented, and aminocarbazoles can be produced in a good yield constantly.
REFERENCES:
patent: 58140070 (1983-08-01), None
patent: 60163863 (1985-08-01), None
patent: 0331708 (1991-05-01), None
patent: 07133261 (1995-05-01), None
Kamikawa Takashi
Maruyama Osamu
Richter Johann
Sackey Ebenezer
Stevens Davis Miller & Mosher L.L.P.
Sumitomo Chemical Company Limited
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