Organic phosphorus compound, preparation method therefor, and uses thereof

A process for preparing an organophosphorus compound, comprising the following steps:

• step A of subjecting a phenol compound of formula (X) to a reaction selected from the group consisting of an epoxidation reaction, a sulfurization reaction, and a hydrogenation reaction,
• wherein:
• the epoxidation reaction is carried out at a molar ratio of the phenol compound to an epoxidizing agent is 1:1-10 at 0° C.-100° C.,
• the sulfurization reaction is carried out at a molar ratio of the phenol compound to a sulfurizing agent is 1:1-6 at 100° C.-240° C.,
• the hydrogenation reaction is carried out under a hydrogen pressure of 1.0-6.0 MPa at 60° C.-260° C. for 0.5-10 h;
• and
• step B of reacting the product obtained in step A with a phosphorous compound selected from a thiophosphorylating agent and a phosphorus-nitridizing agent;
• wherein, in formula (X), groups R1″, R2″, R3″, R4″ and R5″ are, identical to or different from each other, each independently selected from H, and a group of formula (Y), with the proviso that at least one group is of formula (Y):
• wherein group R1″ is selected from single bond and C1-C20 linear or branched alkylene;
• groups R2′″ in m repeating units are, identical to or different from each other, each independently selected from single bond and C1-C4 linear or branched alkylene);
• group R3″ is selected from hydrogen and C1-C20 linear or branched alkyl;
• groups R4′″ in m repeating units are, identical to or different from each other, each independently selected from hydrogen and C1-C4 linear or branched alkyl;
• groups R5″ in m repeating units are, identical to or different from each other, each independently selected from hydrogen and C1-C4 linear or branched alkyl;
• m is a positive integral number of 1-3, and the total carbon number in formula (Y) is 10-20;
• the thiophosphorylating agent is of formula (Z);
• wherein RZ is selected from H, C1-C30 linear or branched alkyl, C1-C30 linear or branched alkoxyl, C6-C20 aryl, C1-C20 linear or branched alkyl, and C6-C20 aryl;
• the phosphorus-nitridizing agent is of formula (Z′):
• wherein groups R0 are each independently selected from H, C6-C20 aryl, C1-C20 linear or branched alkyl, C6-C20 aryl, and C1-C30 linear or branched alkyl,
• in formula (Z) and formula (Z′), the plural groups A are each independently selected from F, Cl, Br, I, H, and OH,
• wherein the reaction between the phenol compound with the phosphorous compound in Step B is carried out at the molar ratio of the phosphorous compound to the phenol compound or the product of step A is 1:1-10 at 50° C.-150° C.