FIELD: organic chemistry. SUBSTANCE: desired quaternary phosphonium salts have formula RR′R″R″′P+X- where if R′=R″=R″′=C6H5, R=CH3,, then X=J; if R′=R″=R″′=N(C2H5)2,, R= CH3, then X=J; if R′=R″=R″′=N(C2H5)2,, R=CH2C6H5, then X=Cl. R′R″R″′P is used as reagent 1, RX being used as reagent 2. Reaction is carried out in the medium of organic solvent. EFFECT: improves catalytic activity of the process. 1 tbl
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