Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1995-06-06
1997-07-15
Kumar, Shailendra
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
564300, 564431, 564433, 564441, C07C20700
Patent
active
056485433
ABSTRACT:
Disclosed is a process for producing a 4-nitrosodiphenylamine of the formula (2) ##STR1## wherein R.sub.1 and R.sub.2 independently represent hydrogen atom, methyl group, ethyl group, cyclohexyl group, methoxy group, ethoxy group or chlorine or bromine atom, or a salt thereof, comprising treating a diphenylamine represented by the formula (1) ##STR2## wherein R.sub.1 and R.sub.2 are as defined above with (i) a mixture of nitrogen oxides, (ii) a hydrogen halide and (iii) an aliphatic alcohol, wherein the atomic ratio of oxygen to nitrogen of the mixture of nitrogen oxides is more than 1.0 and less than 2.0. This process produces 4-nitrosodiphenylamine of the formula (2) or a salt thereof conveniently and effectively, and is industrially advantageous.
REFERENCES:
patent: 2782235 (1957-02-01), Lantz et al.
patent: 4362893 (1982-12-01), Kurek
patent: 4518803 (1985-05-01), Batorewicz et al.
Patent Abstracts of Japan, Unexamined Applications, C field, 14(126):160 C 699 (Mar. 1990); No. 2-3 631 (Toray Ind. Inc.) and JP-A-2-3 631.
Chemical Abstracts, 81(3):318 (Jul. 1974); Abstract No. 13 356t.
Katayama Yasumi
Murata Tetsuo
Takagi Hiroyuki
Kumar Shailendra
Sumitomo Chemical Company Limited
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