Chiral ruthenium complexes with P,N-ligands derived from (S)-proline

被引：22

作者：

Kuznetsov, VF ^{[1
]}

Yap, GPA ^{[1
]}

Alper, H ^{[1
]}

机构：

[1] Univ Ottawa, Dept Chem, Ctr Catalysis Res & Innovat, Ottawa, ON K1N 6N5, Canada

来源：

ORGANOMETALLICS | 2001年 / 20卷 / 07期

关键词：

D O I：

10.1021/om000894w

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

[Ru-2(OAc)(4)] cleanly reacts with 2-(S)-diphenylphosphinomethylpyrrolidine (PPro) and 2-(S)-diphenylphosphinomethyl-N-methylpyrrolidine (PProMe) to give trans, trans, trans-[Ru(OAc)(2)(PPro)(2)] (2) and [Ru(OAc)(2)(PProMe)(2)], respectively, which possess stereogenic nitrogen atoms. The latter complex exists as the cis-P,P-cis-P,N-(Delta)-stereoisomer (Delta -3) in THF and as the (Delta)-stereoisomer (Delta -5) with cis-P,P-trans-N,N coordination geometry in MeOH. Formation of N-based stereocenters occurs selectively, and complexes 2, 3, and 5 are present as single epimers in solution and in the solid state. Thermolysis of Delta -3 in boiling dioxane affords (Delta)- and (Delta)-stereoisomers of the carbene ruthenium complex (7), due to facile dehydrogenation of the N-Me groups of the ligand.

引用

页码：1300 / 1309

页数：10

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