| 摘要 |
PCT No. PCT/US93/03453 Sec. 371 Date Jul. 21, 1993 Sec. 102(e) Date Jul. 21, 1993 PCT Filed Apr. 13, 1993 PCT Pub. No. WO93/21192 PCT Pub. Date Oct. 28, 1993.A process for making a cycloalkyl phosphine comprising hydrogenating an aryl phosphine in the presence of an effective amount of an aryloxide of a metal selected from the group consisting of niobium and tantalum is disclosed. Cycloalkyl phosphine products of this process, useful as ligands in a complex of a transition metal which acts as a catalyst in the formation of stereoisomers, are also set forth. Furthermore, niobium or tantalum organometallic compounds, generated in this process, useful in the catalytic hydrogenation of aryl phosphines and arene-containing polymers, is also described.
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