Synthesis, Characterization, Diastereoselectivity, and Catalytic Activity of Complexes of Ruthenium with BINAP Monoxide
Synthesis, Characterization, Diastereoselectivity, and Catalytic Activity of Complexes of Ruthenium with BINAP Monoxide
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钌与 BINAP 一氧化物配合物的合成、表征、非对映选择性和催化活性
DOI：
10.1021/om000014d
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发表时间：
2000
期刊：
影响因子：
2.8
通讯作者：
J. Parr
中科院分区：
文献类型：
--
作者：
A. Faller;J. Parr
由(R)-和(S)-BINAP一步氧化得到的双膦单氧化物(R)-和(S)-BINPO分别形成了[CyRuCl(η2-BINPO-P，O)]X(X=Cl-，(R)-BINPO，1，(S)-BINPO，1‘；或SbF6-，2和2’)和[CyRu(η2-BINPO-P，O)](SbF6)2，3和3‘.对新化合物进行了光谱表征，并以2‘为例用单晶X射线衍射法进行了表征。BINPO配体与非对映选择性结合，人们只观察到两个可能的异构体中一个热力学稳定的非对映异构体。化合物3是甲基丙烯醛和环戊二烯在中等ee条件下缩合反应的有效催化剂。
The bisphosphine monoxides (R)- and (S)-BINPO, prepared by the monoxidation of (R)- and (S)-BINAP, respectively, form complexes [CyRuCl(η2-BINPO-P,O)]X (X = Cl-, (R)-BINPO, 1, (S)-BINPO, 1‘; or SbF6-, 2 and 2‘) and [CyRu(η2-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.