Oxorhenium(V) Complexes with Pyrazole Based Aryloxide Ligands and Application in Olefin Epoxidation
作者:Pedro Traar、Jörg A. Schachner、Lisa Steiner、Anna Sachse、Manuel Volpe、Nadia C. Mösch-Zanetti
DOI:10.1021/ic102455v
日期:2011.3.7
cis-cyclooctene in yields up to 64%. The ease of preparation and their tolerance to air and moisture, as well as the simple ligand modifications, make them an interesting class of novel catalysts. An attempted reduction of perchlorate ClO4− with complex 8 was unsuccessful. Molecular structures of complexes 1, 4, 6, 7, 8, 8a, 10, and 11 were determined by single crystal X-ray diffraction analyses.
我们合成并表征了一套新的oxorhenium(V)配合物,该配合物由各种含苯酚的吡唑(L1 - L3)和萘酚配体(L4 - L7)协调。取决于起始材料,我们能够选择性地合成monosubstituded或二取代的类型的配合物[ReOBr 2 L(PPH 3)](1 - 7 ; L = L1 - L7)和[ReOClL 2 ](L = L1 8 ; L2 9 ; L4 10 ; L6 11), 分别。所有复合物在固态和溶液中均对空气和湿气稳定。此外,通过用三氟甲磺酸银从8中提取氯,获得了阳离子氧化or(V)络合物[ReO(L1)2(NCMe)](OTf)(8a)。所有新的配合物都能够催化顺式-环辛烯的环氧化,产率高达64%。易于制备及其对空气和湿气的耐受性,以及简单的配体修饰,使其成为一类有趣的新型催化剂。高氯酸盐CLO的试图还原4 -复杂8是不成功的。配合物的分子结构1,4,6,7,8,图