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US 5,717,126 AGranted
Phosphorous-containing calixarenes
AssigneeBASF SE
InventorsRocco Paciello, Michael Roper, Heinz-Josef Kneuper, Ernst Langguth, Peter Michael Lorz
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Abstract
Phosphorus-containing calixarenes of the general formula I ##STR1## and a process for their preparation are described. Additionally, a process for the preparation of aldehydes by the hydroformylation of C.sub.3 -C.sub.20 -olefins by means of rhodium or ruthenium carbonyl complexes, in which the phosphorus-containing calixarenes of the formula I are used as ligands, is described.
Claims11
A phosphorus-containing calixarene of the formula I ##STR10## where n is an integer from 2 to 4,
- R.sup.1 is hydrogen, C.sub.1 -C.sub.20 -alkyl, C.sub.1 -C.sub.20 -alkoxy, sulfonate or carboxylate,
- the radicals R.sup.2 are identical or different and are hydrogen or C.sub.1 -C.sub.20 -alkyl and
- X is hydrogen, C.sub.1 -C.sub.20 -alkyl, C.sub.1 -C.sub.20 -alkoxy or a phenyl or phenoxy group which is unsubstituted or substituted by 1 to 3 C.sub.1 -C.sub.20 -alkyl, C.sub.1 -C.sub.20 -alkoxy, sulfonate, carboxylate, C.sub.1 -C.sub.20 -alkylthio or C.sub.2 -C.sub.20 -dialkylamino groups.
Dependencies are inferred from the claim text.