| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention is related to the field of organic chemistry, in particular, to method for production of methyl ethers of 2-thiophen carbonic acid intended for use in synthesis of optical whiteners, dyes for cotton, wool, artificial fibers, medical preparations, and also as additive to oils or hydraulic liquids. Substance of the method consists in thiophen interaction with methanol in presence of carbon tetrachloride under action of catalysts - oxo-bis-(2,4-pentanodionato)vanadium VO(acac)2 or tris (2,4-pentanodionato)iron Fe(acac)3, or molybdenum hexacarbonyl Mo(CO)6 at the temperature of 130-170C for 3-6 hours at the following mole ratio - catalyst:thiophen:CCl4:methanol equal to 1:100:200-300:200-300. ^ EFFECT: suggested method makes it possible to produce target product with yield of 63-85%, using simplified technology. ^ 1 tbl, 14 ex |
