FIELD: organic chemistry. SUBSTANCE: dimethyl ether (2S,4RS)-N-phthaloyl-4-bromoglutamic acid is used as reagent 1, sodium iodide being used as reagent 2. Reaction is carried out in the medium of polar aprotic solvent. Initially reaction takes place at room temperature within 45-60 min and then at 38-45 C within 60-80 min. Then reaction mixture is treated by solution of sodium thiosulfate and desired product is isolated. EFFECT: improved quality of desired product. 2 cl
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RU2074168C1 |
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