申请人:Hoechst Aktiengesellschaft
公开号:US05166385A1
公开(公告)日:1992-11-24
Process for the preparation of phosphino compounds Phosphorus-containing compounds of the formula (I) (R.sup.1)(R.sup.2)P(O)--CR.sup.3 R.sup.4 --CHR.sup.5 R.sup.6 (I) in which R.sup.1 and R.sup.2 are alkyl, alkoxy or optionally substituted phenyl, R.sup.3 and R.sup.5 are H, R, optionally substituted phenyl, ROCO--, RO--CO--RO--, halogen, CN, RO--, RO--RO--R-CO--, H.sub.2 NCO--, RNHCO-- or RRNCO--, in which R is alkyl, R.sup.4 and R.sup.6 have the same meaning as defined for R.sup.1 and R.sup.2 or are a divalent radical --CO--R.sup.7 --CO in which R.sup.7 is oxygen, NR* or sulfur, and R* is H, optionally substituted phenyl or alkyl, are precursors for plant protection agents and fire retardants. According to the invention they can be prepared in high yields and high purity by reacting a compound (R.sup.1)(R.sup.2)P--OR.sup.8, in which R.sup.8 is alkyl or optionally substituted phenyl, with an alkene of the formula R.sup.3 R.sup.4 C.dbd.CR.sup.5 R.sup.6 and at least an equimolar amount of aprotic organic substance such as alcohols, amines, phenols, thiophenols or anilines.
制备膦化合物的过程 磷含化合物的化学式(I)(R.sup.1)(R.sup.2)P(O)--CR.sup.3 R.sup.4 --CHR.sup.5 R.sup.6(I)其中R.sup.1和R.sup.2是烷基,烷氧基或可选择性取代的苯基,R.sup.3和R.sup.5是H,R,可选择性取代的苯基,ROCO--,RO--CO--RO--,卤素,CN,RO--,RO--RO--R-CO--,H.sub.2 NCO--,RNHCO--或RRNCO--,其中R是烷基,R.sup.4和R.sup.6具有与R.sup.1和R.sup.2定义的相同含义或是二价基团--CO--R.sup.7 --CO,其中R.sup.7是氧,NR*或硫,而R*是H,可选择性取代的苯基或烷基,是植物保护剂和阻燃剂的前体。根据本发明,它们可以通过将化合物(R.sup.1)(R.sup.2)P--OR.sup.8与具有化学式R.sup.3 R.sup.4 C.dbd.CR.sup.5 R.sup.6的烯烃和至少等摩尔量的无极性有机物质如醇,胺,酚,硫酚或苯胺反应,以高产率和高纯度制备。