| 摘要 |
<p>A process for preparing an organic phosphorous compound of the general formula <IMAGE> wherein RA represents <IMAGE> where X1 is a halogen atom, Y is -CH2- or -CH2-C2-, and R1 is H or CH3 when Y is -CH2-CH2-, or H, CH3 or C2H5 when Y is -CH2-, RB represents an alkyl group having from 1 to 4 carbon atoms or a halogenated alkyl group having from 2 to 4 carbon atoms, RC represents <IMAGE> where X2 is a halogen atom, Z is -CH2 -or -CH2-CH2-, and R2 is H or CH3 when Z is -CH2-CH2-, or H, CH3 or C2H5 when Z is -CH2-, and RD represents an alkyl group having from 1 to 4 carbon atoms or a halogenated alkyl group having from 2 to 4 carbon atoms, the process including the steps of reacting a cyclic halogenophosphite with a cyclic phosphorous acid and acetone in a molar ratio of 1:1:1, reacting the resulting product with a molecular halogen X22 wherein X2 is as defined above to obtain a first product and, esterifying said first product with an alkyl alcohol or halogenated alkyl alcohol or an alkylene oxide or halogenated alkylene oxide to obtain said organic phosphorous compound.</p> |
