| abstract |
The reaction is effected at >150 degrees C, esp. >190 degrees C, for 10 hrs, depending on the temp. The reaction time may be reduced to 5-8 hrs at >190 degrees C by passing NH, under normal press. through the reaction mix. Suitable starting matls are 1-nitro-anthraquinone, 1:5-dinitroanthraquinone, etc. high yields of amino anthraquinones being obtd. |