申请人:Bayer Aktiengesellschaft
公开号:US04052484A1
公开(公告)日:1977-10-04
A cyclic phosphine oxide of the formula ##STR1## in which R.sup.1 is an alkyl or an aryl radical having up to 14 carbon atoms, R.sup.2, r.sup.3 and R.sup.4 each independently is a C.sub.1 -C.sub.4 -alkyl radical, hydrogen, chlorine or bromine, X and Y each independently is oxygen or sulfur, a, b, and c each independently is 0 or 1, and R.sup.5 is a C.sub.1 -C.sub.12 -alkyl radical and, where a = 0, also an aryl radical and, where a = 1, an equivalent of a cation, R.sup.6 is a C.sub.1 -C.sub.12 -alkyl radical and, where b = 0, also an aryl radical and, where b = 1, an equivalent of a cation, Is produced by reacting an unsaturated 5-membered cyclic phosphine oxide of the formula ##STR2## with a compound containing a phosphorus-hydrogen bond and of the formula ##STR3## in which R.sup.7 is a C.sub.1 -C.sub.12 -alkyl radical or, where a = 0, also an aryl radical, and R.sup.8 is a C.sub.1 -C.sub.12 -alkyl radical or, where b = 0, also an aryl radical, In the presence of free radicals at a temperature of about 50.degree. C to about 300.degree. C, and the reaction product is optionally hydrolyzed and converted into a salt.
公式为##STR1##的环状膦氧化物,其中R1是具有至多14个碳原子的烷基或芳基基团,R2、R3和R4各自独立地是C1-C4烷基基团、氢、氯或溴,X和Y各自独立地是氧或硫,a、b和c各自独立地是0或1,R5是C1-C12烷基基团,当a=0时也是芳基基团,当a=1时是一个阳离子的等效物,R6是C1-C12烷基基团,当b=0时也是芳基基团,当b=1时是一个阳离子的等效物。该化合物是通过将公式为##STR2##的不饱和五元环膦氧化物与含有磷氢键的化合物反应而制得的。该化合物的化学式为##STR3##其中R7是C1-C12烷基基团,当a=0时也是芳基基团,R8是C1-C12烷基基团,当b=0时也是芳基基团。在自由基存在下,在约50℃至300℃的温度下反应,反应产物可选择性水解并转化为盐。