FIELD: organic chemistry.
SUBSTANCE: invention relates to new indoline intermediate of formulae I 
and II 
wherein R1 is C1-C20-alkylcarbonyl; R1 and R1 are the same or different and represent lower alkyl; R4 is hydrogen, lower alkyl, or their salts or amide derivative and method for production thereof.
EFFECT: improved method for production of indoline derivatives.
7 cl, 24 ex
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