Production of 2,4- and 2,6-diaminotoluenes

Details Production of 2,4- and 2,6-diaminotoluenes Production of 2,4- and 2,6-diaminotoluenes

1979-05-11

1981-03-17

Doll, John

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

260689, 564423, 564437, C07C 8511, C07C 8526

Patent

active

042566711

ABSTRACT:
A process for the manufacture of 2,4- and 2,6-diaminotoluenes comprises catalytically hydrogenating the corresponding molten nitro compound in the presence of water, adding hydrochloric acid to form the monohydrochlorides, crystallizing 2,6-diaminotoluene monohydrochloride, filtering it off and, if desired, liberating the free bases by addition of an alkali.

REFERENCES:
patent: 2884457 (1959-04-01), Ferstandig
patent: 2976320 (1961-03-01), Winstrom et al.
patent: 3136818 (1964-06-01), Sperber et al.
patent: 3847989 (1974-11-01), Platz et al.

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