FIELD: chemistry. SUBSTANCE: invention relates to a process for the preparation of (2-hydroxynaphthalen-1-yl) azine of general formula I where interaction of 2-naphthol with (A), or unsubstituted pyrimidine (b), or 3.6-diphenyl-1,2,4-triazine (c) in a trifluoroacetic acid medium which is reacted with unsubstituted quinazoline, which is then evaporated and the residue is treated with potassium hexacyanoferrate in an alkaline medium. EFFECT: new method for obtaining this compound with high yields is proposed, without the use of additional reagents, which allows to lower the process temperature to room temperature.