FIELD: chemistry.
SUBSTANCE: invention relates to chemical engineering processes and specifically to methods for catalytic alkylation of aromatic amines and nitro compounds. N-methyl-para-phenetidine is obtained from para-phenetidine and/or para-nitrophenetole by N-alkylation with methanol in vapour phase on a dehydration catalyst at temperature of 180-260°C and atmospheric pressure, followed by separation of products by rectification.
EFFECT: possibility of selective production of N-methyl-para-phenetidine with purity of not less than 98% and high output, which enable highly profitable, large-tonnage production.
15 cl, 8 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR SELECTIVE PRODUCTION OF N-METHYL-PARA-ANISIDINE | 2011 |
|
RU2472774C1 |
| METHOD FOR SELECTIVE PRODUCTION OF N-METHYL-PARA-ANISIDINE | 2012 |
|
RU2508288C1 |
| N-METHYLALANINE PRODUCTION PROCESS | 2003 |
|
RU2240308C1 |
| METHOD OF SYNTHESIS OF N-ALKYLANILINES | 1998 |
|
RU2152382C1 |
| METHOD OF PRODUCING N-METHYL-PARA-PHENETIDINE | 2016 |
|
RU2632880C1 |
| CATALYST AND METHOD OF OBTAINING N-METHYLANILINE | 2007 |
|
RU2346740C1 |
| METHOD FOR PRODUCTION OF N-METHYLANILINE | 2004 |
|
RU2275353C2 |
| ANTIDETONATING ADDITIVE ON THE BASIS OF MIXTURE OF METHYLATED TOLUIDINES AND METHOD OF SELECTIVE RECEIVING OF MIXTURE OF N-METHYL-TOLUIDINES | 2015 |
|
RU2659221C2 |
| COPPER-CHROMIUM-ZINC CATALYST FOR HETEROGENEOUS REACTIONS | 2014 |
|
RU2555842C1 |
| CATALYST FOR N-METHYLANILINE SYNTHESIS | 1995 |
|
RU2066563C1 |
