THIO, DITHIO AND PHOSPHORIC ACID ESTERS THIO, DITHIO AND PHOSPHORIC ACID ESTERS

摘要

Esters of formula (I) (where R1 and R2 are 1-5C alkyl; R3 and R4 are H, halogen or 1-5C alkyl; X and Y are O or S; n is 1-4 and m is 1-5) are prepd. by reacting a halide of formula (II) (where Hal is halogen) with a phenol of formula (III) the reaction being carried out in the presence of an acid-binding agent or (III) being used in the form of its alkali metal, ammonium or alkylammonium salt.