Verfahren zur Herstellung neuer Phosphinoxyde

摘要

The invention comprises secondary and tertiary phosphine oxides of formula where R is a C1-18 substituted or unsubstituted, saturated or unsaturated, branched or straight chain aliphatic hydrocarbon group, a cycloalkyl group or a substituted or unsubstituted phenyl group, R11 is hydrogen, C1-6 alkyl or phenyl, Z is hydrogen or where R1 is R as defined above or hydrogen, Y is R1 as defined above or, when R11 and Z are both hydrogen, Y is R1, where A is C1-6 alkylene or phenylene, and when Z is H and R11 is other than hydrogen, Y has the same meaning as R1; and when Z is Y has the same meaning as R1 and R11 is hydrogen, and wherein, in the above, R11 taken in conjunction with R1 may also represent the remainder of a cycloalkyl ring. Substituents in the R and R1 groups may include halogen, hydroxy, C1-6 alkoxy, halogen, cyano (R only), nitro (R1 only) and carbalkoxy. The compounds may be prepared by reacting a phosphine oxide of formula with an aldehyde or ketone in the presence of an acidic or basic catalyst. An inert solvent and/or inert atmosphere may be used. The products may be used as complexing agents for metal values. Specification 912,261 is referred to.