Synthesis, characterization, diastereoselectivity, and catalytic activity of complexes of ruthenium with BINAP monoxide

被引:78
作者
Faller, JW
Parr, J
机构
[1] Yale Univ, Dept Chem, New Haven, CT 06520 USA
[2] Loughborough Univ Technol, Dept Chem, Loughborough LE11 3TU, Leics, England
关键词
D O I
10.1021/om000014d
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The bisphosphine monoxides (R)- and (S)-BINPO, prepared by the monoxidation of (R)- and (S)-BINAP, respectively, form complexes [CyRuCl(eta(2)-BINPO-P)]X (X = Cl-, (R)-BINPO, 1, (S)-BINPO, 1'; or SbF6-, 2 and 2') and [CyRu(eta(2)-BINPO-P, O)](SbF6)(2), 3 and 3'. The new compounds were characterized spectroscopically and in the case of 2' by single-crystal X-ray diffraction. The BINPO ligand binds diastereoselectively, and one observes only a single thermodynamically stable diastereomer of the two possible isomers. Compound 3 is an efficient catalyst for the condensation of methacrolein and cyclopentadiene in moderate ee.
引用
收藏
页码:1829 / 1832
页数:4
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