Synthesis and catalytic properties of N-functionalized carbene complexes of rhodium(I) and ruthenium(II)

被引:111
作者
Cetinkaya, B [1 ]
Ozdemir, I [1 ]
Dixneuf, PH [1 ]
机构
[1] UNIV RENNES 1, CHIM COORDINAT ORGAN LAB, CNRS, URA 415, F-35042 RENNES, FRANCE
关键词
carbene; imidazole; ruthenium; catalysis; rhodium; cyclopropanation;
D O I
10.1016/S0022-328X(96)06927-6
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Imidazolidin-2-ylidene derivatives of rhodium(I) and ruthenium(II), having 2-methoxyethyl substituent on the N-atom, [Rh(L)Cl(PPh3)(2)], [Rh(L)Cl(COD)] or [Ru(L)Cl-2(arene)] (L-1 = CN(Me)CH2CH2NCH2CH2OMe and L-2 = CN(CH2CH2OMe)CH2CH2NCH2CH2OMe) have been prepared by treatment of [RhCl(PPh3)(3)], [RhCl(COD)](2) or [RuCl2(arene)](2) with the N-functionalized electron-rich olefins L-1 = L-1 or L-2 = L-2. All of the new carbene rhodium(I) or ruthenium(II) complexes have proved to be effective catalysts for the cyclopropanation reactions of diazoalkane derivatives with styrene and the rhodium(I) precursors lead to the highest catalytic activity.
引用
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页码:153 / 158
页数:6
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