METHOD OF PRODUCING CHLOROFORM FROM METHYLENE CHLORIDE

摘要

FIELD: chemistry.;SUBSTANCE: hydrogen donor used is methylene chloride, quaternary ammonium salts used are compounds of general formula R₃R'NCl or R₂R'₂NCI, where R=C₁-C₁₈ - alkyl, R' - C₁-C₁₈ -alkyl, chloroalkyl or benzyl in molar ratio salt: copper equal to 8-10:1, concentration of copper is 0.1-0.5 g/l. The process is carried out at 180-200°C with molar ratio of carbon tetrachloride and methylene chloride equal to 1.5-6:1. The catalyst can be added in 2-4 portions after 90-120 minutes each.;EFFECT: selective method of producing chloroform without using scarce hydrogen donors.;2 cl, 2 tbl, 17 ex