Improved Syntheses for the Compounds [(1,5-COD)M(μ-O2C8H15)]2 (M = Ir, Rh)
摘要:
An improved synthesis procedure is reported for the compounds [(1,5-COD)M(mu-O2C8H15)](2) (COD = cyclooctadiene, M = Ir (1), Rh (2), O2C8H15 = 2-ethylhexanoate); that procedure provides a more effective method of product isolation resulting in easier crystallization, and 76% and 85% yields of pure, crystalline 1 and 2, respectively. The improved synthesis and simplified crystallization of high-purity 1 and 2 are significant, not only because 1 is useful as a model for industrial Ziegler-type hydrogenation precatalysts, but also because 1 and 2 are potentially useful in a variety of other areas.