FIELD: organic chemistry. SUBSTANCE: method involves rearrangement of 1-arylindole of the general formula (1) given in description, where R1, R3 - hydrogen, lower alkyl, R2 - hydrogen, chlorine, lower alkyl; R4 - hydrogen, lower alkyl. Process is carried out at heating in polyphosphoric acid, and obtained, where R1, R3 - hydrogen, lower alkyl, R2 - hydrogen, chlorine, lower alkyl. Yield is 25- 43,5% . EFFECT: improved method of synthesis.
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