1714-14-3Relevant articles and documents
Reaction of anthrone and its 1- and 4-substituted derivatives with sulfur in the presence of nucleophiles
Loskutov
, p. 1478 - 1481 (2007/10/03)
Anthrone and its 1-substituted derivatives react with molecular sulfur in the presence of nucleophiles (aromatic amines, hydrazine, substituted hydrazines, and malononitrile) to give intermediate monothioanthraquinones which are then converted into mixtures of the corresponding anthraquinones and 10-imino-, 10-hydrazono-, or 10-dicyanomethylene-9,10-dihydroanthracen-9-ones. Unlike 1-substituted derivatives, 4-substituted anthrones react with sulfur in the presence of phenylhydrazine to give only 1-substituted anthraquinones.
PHASE-TRANSFER CATALYSIS IN THE REACTION OF ANTHRAQUINONEDIAZONIUM FLUOROBORATE WITH BENZENE IN THE PRESENCE OF BASE
Pushkina, L. L.,Ponomareva, L. A.,Shelyapin, O. P.,Shein, S. M.
, p. 1336 - 1340 (2007/10/02)
Phase-transfer catalysis by polyethers and quaternary ammonium salts in the reaction of anthraquinonediazonium fluoroborate with benzene under the influence of O-nucleophiles was investigated.The introduction of the catalysts increase the yield of 1-phenylanthraquinone from 7 to 80-90percent.The investigated catalysts are similar in effectiveness.The reactivity series of the anions was determined: CH3COO- > OH- >C17H35COO- >CCl3COO-.Realization of the reaction in an atmosphere of oxygen leads to the formation of 1-hydroxyanthraquinone with a yield of up to 18percent in addition to 1-phenylanthraquinone.