FIELD: chemistry.
SUBSTANCE: invention relates to a method for synthesis of novel alkyl esters of 3-oxo-1,3-dihydrobenzo[c]oxepin-4-carboxylic acid of general formula 
, where R is methyl, ethyl, propyl, isopropyl, butyl, isopentyl, involving heating dialkyl esters of 2-(2-bromomethylbenzylidene)malonic acid, obtained through bromation of dialkyl esters of 2-(2-methylbenzylidene)malonic acid with N-bromosuccinimide to temperature of 190-220°C with simultaneous distillation of alkylbromide for 1-5 hours.
EFFECT: compounds can be used as intermediate products for synthesis of different organic compounds, particularly biologically active compounds.
1 cl, 6 ex
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