The invention is directed to a phosphine compound represented by general formula (1) wherein R′ and R″ independently are selected from alkyl, cycloalkyl and 2-furyl radicals, or R′ and R″ are joined together to form with the phosphorous atom a carbon-phosphorous monocycle comprising at least 3 carbon atoms or a carbon-phosphorous bicycle; the alkyl radicals, cycloalkyl radicals, and carbon-phosphorous monocycle being unsubstituted or substituted by at least one radical selected from the group of alkyl, cycloalkyl, aryl, alkoxy, and aryloxy radicals; Cps is a partially substituted or completely substituted cyclopentadien-1-yl group, including substitutions resulting in a fused ring system, and wherein a substitution at the 1-position of the cyclopentadien-1-yl group is mandatory when the cyclopentadien-1-yl group is not part of a fused ring system or is part of an indenyl group. Also claimed is the use of these phosphines as ligands in catalytic reactions and the preparation of these phosphines.
本发明涉及一种
磷化合物,其通式(1)表示,其中R′和R″独立地选择自烷基、环烷基和2-
呋喃基基团,或R′和R″与
磷原子结合形成至少含有3个碳原子的碳
磷单环或碳
磷双环;烷基基团、环烷基基团和碳
磷单环可以未经取代或被至少一种选择自烷基、环烷基、芳基、烷氧基和芳氧基基团的基团取代;Cps是部分取代或完全取代的
环戊二烯-1-基基团,包括导致融合环系统的取代物,在
环戊二烯-1-基基团不是融合环系统的一部分或是
吲哚基团的一部分时,必须在其1-位置进行取代。还声明了将这些
磷化合物用作催化反应中的
配体以及制备这些
磷化合物的用途。