Process for preparing 1-aza-2-hydroxybenzanthrone

Details Process for preparing 1-aza-2-hydroxybenzanthrone Process for preparing 1-aza-2-hydroxybenzanthrone

C - Chemistry, Metallurgy

09

B

260/236.14

C09B 5/02 (2006.01) C07D 221/18 (2006.01)

Patent

CA 1039719

ABSTRACT OF THE DISCLOSURE: 1-aza-2-hydroxybenzanthrone, useful as an intermediate for synthesizing dyes is obtained by the direct reaction of alkyl esters of anthraquinone-1-acetic acid with ammonia in hydroxylated solvents and in the presence of strong bases and/or reducing substances.

205104

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