Protonated aminocyclopentadienyl ruthenium hydride reduction of benzaldehyde and the conversion of the resulting ruthenium triflate to a ruthenium hydride with H2 and base

被引：40

作者：

Casey, CP ^{[1
]}

Vos, TE ^{[1
]}

Singer, SW ^{[1
]}

Guzei, IA ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Chem, Madison, WI 53706 USA

来源：

ORGANOMETALLICS | 2002年 / 21卷 / 23期

关键词：

D O I：

10.1021/om020507d

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of N-phenyl-2,5-dimethyl-3,4-diphenylcyclopenta-2,4-dienimine (6) with Ru3CO12 formed two isomers of {[2,5-Me-2-3,4-Ph-2(eta(5) -C4CNHPh)]Ru(CO)(mu-CO)}(2) (8-trans and 8-cis). Photolysis of 8 under a H-2 atmosphere led to the formation of the aminocyclopentadienyl ruthenium hydride [2,5-Me-2-3,4-Ph-2(eta(5)-C4CNHPh)]Ru(CO)(2)H (9-H). 9-H reduced benzaldehyde slowly at 75 degreesC to give benzyl alcohol and 8. Protonation of 9-H with triflic acid produced {[2,5-Me-2-3,4-Ph-2(eta(5)-C4CNH2Ph)]Ru(CO)(2)H}OTf (11-H), which reacted rapidly with benzaldehyde at -80 degreesC to give benzyl alcohol and [2,5-Me-2-3,4-Ph-2(eta5-C4CNHPh)]Ru(CO)(2)OTf(9-OTf). Reaction of 9-OTf with H2 and base led to the re-formation of 9-H. These reactions provide the transformations required for a catalytic cycle for hydrogenation of aldehydes.

引用

页码：5038 / 5046

页数：9

共 33 条

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