申请人:Minnesota Mining and Manufacturing Company
公开号:US04556720A1
公开(公告)日:1985-12-03
Coordination compounds of rhodium are solid salts having donor ligands of [(aryl).sub.3 P].sub.3 Rh.sup.+ and a non-coordinated counterion derived from a fluorochemical acid, the salts having the formula: [(aryl).sub.3 P].sub.3 Rh.sup.+ (counterion).sup.-. The salts are prepared by reacting [(aryl).sub.3 P].sub.4 RhH, which is an uncharged rhodium hydride, with a fluorochemical acid selected form acids having the formulae: HC(R)(SO.sub.2 R.sub.f).sub.2, R.sub.f 'SO.sub.3 H, and HN(SO.sub.2 R.sub.f).sub.2 wherein R.sub.f and R.sub.f ' are perfluoroalkyl groups and R is lower alkyl substituted or unsubstituted phenyl, hydrogen, Cl, SO.sub.2 R.sub.f or R.sub.f. Carbonylation of the [(aryl).sub.3 P].sub.3 Rh.sup.+ (counterion).sup.- compounds of this invention, e.g., by contacting the salts of the invention with carbon monoxide gas, produces salts having the formula: [(aryl).sub.3 P].sub.3 Rh(CO).sub.n.sup.+ (counterion).sup.-, wherein n is 1 or 2, and (counterion).sup.- is as defined above. These carbonylated derivatives as well as the above-described precursor salts are useful as catalysts in organic transformation reactions, such as isomerization, cyclization and hydroformylation reactions.
铑的配位化合物是固体盐,具有供体配体[(芳基).sub.3 P].sub.3 Rh.sup.+和来自氟化学酸的非配位对离子衍生物,这些盐具有以下公式:[(芳基).sub.3 P].sub.3 Rh.sup.+ (对离子).sup.-。这些盐是通过将[(芳基).sub.3 P].sub.4 RhH(一种不带电的铑氢化物)与选择自具有以下公式的氟化学酸反应而制备的:HC(R)(SO.sub.2 R.sub.f).sub.2,R.sub.f 'SO.sub.3 H和HN(SO.sub.2 R.sub.f).sub.2,其中R.sub.f和R.sub.f'是全氟烷基基团,R是低碳烷基取代或未取代苯基,氢,Cl,SO.sub.2 R.sub.f或R.sub.f。这种发明的[(芳基).sub.3 P].sub.3 Rh.sup.+ (对离子).sup.-化合物的羰基化,例如,通过将该发明的盐与一氧化碳气体接触,产生具有以下公式的盐:[(芳基).sub.3 P].sub.3 Rh(CO).sub.n.sup.+ (对离子).sup.-,其中n为1或2,(对离子).sup.-如上定义。这些羰基化衍生物以及上述的前体盐在有机转化反应中作为催化剂是有用的,例如异构化,环化和氢甲酰化反应。