发明名称 |
Process for preparing N-aliphatic substituted p-phenylenediamines |
摘要 |
A process for preparing N-aliphatic substituted p-phenylenediamine intermediates is provided which comprises contacting an aliphatic amine or substituted aliphatic amine derivative and nitrobenzene in the presence of a suitable solvent system, and reacting the aliphatic amine or substituted aliphatic amine derivative and nitrobenzene in the presence of a suitable base and a controlled amount of protic material at a suitable temperature in a confined reaction zone. In one embodiment, the N-aliphatic substituted p-phenylenediamine intermediates are reduced to N-aliphatic substituted p-phenylenediamines and the N-aliphatic substituted p-phenylenediamines can be reductively alkylated to N'-alkylated, N-aliphatic substituted p-phenylenediamines. In another embodiment of the invention, N-aliphatic substituted p-phenylenediamine intermediates are reductively alkylated to N'-alkylated, N-aliphatic substituted p-phenylenediamines.
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申请公布号 |
US5252737(A) |
申请公布日期 |
1993.10.12 |
申请号 |
US19920887981 |
申请日期 |
1992.05.22 |
申请人 |
MONSANTO COMPANY |
发明人 |
STERN, MICHAEL K.;CHENG, BRIAN K. |
分类号 |
C07D295/02;B01J31/12;C07B61/00;C07C201/08;C07C209/02;C07C209/24;C07C209/36;C07C209/38;C07C209/60;C07C211/03;C07C211/09;C07C211/35;C07C211/50;C07C211/51;C07C211/52;C07C309/45;C07D211/04;C07D295/06;(IPC1-7):C07C209/00 |
主分类号 |
C07D295/02 |
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地址 |
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