申请人:Produits Chimiques Ugine Kuhlmann
公开号:US04283345A1
公开(公告)日:1981-08-11
A process is disclosed for the preparation of mononitro derivatives of 1,2,3,4-tetrahydro-anthraquinone from 1,4,4a,9a-tetrahydro-anthraquinone, in which a thermal pretreatment of the 1,4,4a,9a-tetrahydro-anthraquinone is carried out in the presence of a hydrogenation catalyst in an inert atmosphere and in the absence of oxidizing or reducing agents, the anthraquinone by-produced as well as the catalyst are separated and the mixture of 1,2,3,4-tetrahydro-9,10-anthracenediol and 1,2,3,4-tetrahydro-anthraquinone obtained is subjected to a nitration reaction.
揭示了一种制备1,2,3,4-四氢蒽醌的单硝基衍生物的过程,从1,4,4a,9a-四氢蒽醌中制备,其中在惰性气氛中,在没有氧化或还原剂的情况下,在氢化催化剂的存在下对1,4,4a,9a-四氢蒽醌进行热处理,分离产生的蒽醌以及催化剂,然后将得到的1,2,3,4-四氢-9,10-蒽二酚和1,2,3,4-四氢蒽醌混合物进行硝化反应。