| 摘要 |
PCT No. PCT/EP90/01003 Sec. 371 Date Feb. 20, 1992 Sec. 102(e) Date Feb. 20, 1992 PCT Filed Jul. 2, 1990 PCT Pub. No. WO91/00262 PCT Pub. Date Jan. 10, 1991.A process for the preparation of N-alkylhalogenoanilines of the formula (I) 100 degrees (* CHEMICAL STRUCTURE *) (I) in which X is a chlorine or bromine atom and n is the number 1 or 2, R1 is an alkyl (C1-C4) radical, R2 an alkyl (C1-C6) radical or R1 and R2 together with the carbon atom can form a five- or six-membered cycloalkane ring, by reacting a halogenonitrobenzene of the formula (II) (* CHEMICAL STRUCTURE *) (II) in which X and n have the abovementioned meanings with an at least stoichiometric amount of a carbonyl compound of the formula (III) (* CHEMICAL STRUCTURE *) (III) in which R1 and R2 have the meanings mentioned or R1 and R2 together with the carbon atom of the carbonyl group can form a five- or six-membered cycloalkane ring, in an inert organic solvent at temperatures of about 10 to about 100 degrees C., at a hydrogen superatmospheric pressure of about 0 to about 50 bar, in the presence of a platinum catalyst on activated carbon.
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