Diphosphines containing silane groups, immobilised diphosphinese and the use thereof as hydrogenation catalysts

Abstract From the Canadian patent

FK/6-18509/A, Diphosphines containin silane groups immobilised diphosphines and the use thereof as hydrogenation catalysts, Abstract of the Disclosure Compounds of formula I, (I), wherein R1 denotes identical or different radicals and is linear or branched C1-C12alkyl unsubstituted C5-C6cycloalkyl or C5-C6cycloalkyl which is substituted by C1-C4alkyl or C1-C4alkoxy, or is phenyl or benzyl, or both substituents R1 of a group (R1)2P are o,o'-diphenylene, R2 is hydrogen, linear or branched C1-C12alkyl phenyl or benzyl, R3 is, C1-C12alkylene R4 is C2-C18alkylene, phenylene or benzylene and R5 is C1-C6alkyl or, phenyl, can be applied to solid carriers such as silica gel or aerosils, and …