FIELD: organic chemistry, chemical technology. SUBSTANCE: invention relates to substituted amines, in part, synthesis of alkyl-N-phenylcarbamates of the formula C6H5-NCOOR where R - C1-C4-alkyl. Synthesis is carried out by reaction of symm. diphenylurea with alcohol of the formula ROH where R - as indicated above in dimethylformamide medium at mass ratio (1:7)-(14:3) 2-10, under increased pressure, at 160-180 C. Method provides decrease of reaction period up to 0.75 hr (as compared with that of 3 hr in known method). Synthesized compounds were used as raw for isocyanates and pesticides synthesis. EFFECT: simplified and intensified method. 1 tbl
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|---|---|---|---|
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|
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