Catalytic isomerization of allylic alcohols by (η6-p-cymene)-ruthenium(II) complexes in organic and aqueous media:: New recyclable and highly efficient catalysts in water containing ammonium-functionalized ligands

被引：59

作者：

Crochet, P ^{[1
]}

Díez, J ^{[1
]}

Fernández-Zúmel, MA ^{[1
]}

Gimeno, J ^{[1
]}

机构：

[1] Univ Oviedo, Dept Quim Organ & Inorgan, Inst Univ Quim Organomet Enrique Moles, Unidad Asociada,CSIC,Fac Quim, E-33071 Oviedo, Spain

来源：

ADVANCED SYNTHESIS & CATALYSIS | 2006年 / 348卷 / 1-2期

关键词：

allylic alcohol; ammonium ligands; isomerization; recycling; ruthenium; water-soluble;

D O I：

10.1002/adsc.200505279

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The water-soluble complexes [RuCl2(eta(6)-p-cymene){kappa-(P)-PPh3-n(OCH2CH2NMe3)(n)}][SbF6](n) [n = 1 (4a), 2 (4b) or 3 (4c)] have been prepared from the neutral precursors [RuCl2(eta(6)-p-cymene){kappa-(P)-PPh3-n(OCH2CH2NMe2)(n)}] [n = 1 (2a), 2 (2b) or 3 (2c)] and MeI via quaternization of the nitrogen atom of the terminal aminoalkyl groups, and subsequent counteranion exchange by the treatment with AgSbF6. Complexes 2a-c and 4a-c have proven to be highly active catalysts for isomerization of allylic alcohols in THF and aqueous media, respectively. Moreover, the water-soluble catalysts 4a-c can be reused after a simple extraction process at the end of the reaction. In particular, 4c presents a remarkable capability to be recycled, being active during 10 successive runs.

引用

页码：93 / 100

页数：8

共 62 条

[1] RHODIUM(I)-CATALYZED BIPHASIC ISOMERIZATION OF ALLYLIC ALCOHOLS [J].