31592-26-4Relevant academic research and scientific papers
SYNTHESIS OF SUBSTITUTED tert-BUTYLANTHRAQUINONES
Pozdnyakovich, Yu. V.,Savyak, R. P.,Shein, S. M.
, p. 532 - 538 (2007/10/02)
The oxidation of 2-methyl-5-tert-butyldiphenylmethane and its 4'-methyl-, chloro-, and nitro-substituded derivatives by potassium permangate in a mixture of pyridine and water leads to the formation of the correspoding 2-benzoyl-4-tert-butyl-benzoic acids, which are converted by the action of sulfuric acid with heat into substituted 2-tert-butylanthraquinones.The cyclization of 2-benzoyl-4-tert-butylbenzoic acids containig a tert-butyl group or chlorine atom in the benzoyl ring is accompanied by a Hayashi rearrangement, which leads to the formation of mixtures thecorresponding 2,6- and 2,7-disubstituted anthraquinones.
