An effective route to cycloruthenated N-ligands under mild conditions

被引:144
作者
Fernandez, S [1 ]
Pfeffer, M [1 ]
Ritleng, V [1 ]
Sirlin, C [1 ]
机构
[1] Univ Strasbourg 1, CNRS, UMR 7513, Lab Synth Metallo Induites, F-67070 Strasbourg, France
关键词
D O I
10.1021/om9901067
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Cycloruthenated complexes of the type [(eta(6)-C6H6)Ru(C boolean AND N)CH3CN]+PF6- (C boolean AND N = C6H4-2-CH2NMe2, (R)-(+)-C6H4-2-CH(Me)NMe2, C6H2-3, 4-(OCH3)(2)-2-CH2NMe2) are readily obtained by the intramolecular C-H activation of N,N-dimethylbenzylamine derivatives with [(eta(6)-C6H6)RuCl2](2) in up to 53% isolated yields. Under similar conditions, 8-methylquinoline also Led to a cycloruthenated complex, though in, lower yield (12%) and after a longer reaction, time. Reaction with the optically active (R)-(+)-N,N-dimethyl-1-phenylethylamine led to a 48% diastereomeric excess in the cycloruthenated product. Under the same conditions, and after 14 and 65 h of reaction time, respectively, 2-phenyl- and 2-benzylpyridine are cyclometalated, leading to the formation of complexes in which the benzene ligand has been substituted by three acetonitriles: [(C boolean AND N)Ru(CH3CN)(4)]+PF6- (C boolean AND N = C6H4-2-C5H4N, C6H4-2-(CH2)-C5H4N) were obtained in. 40 and 24% isolated yields, respectively.
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页码:2390 / 2394
页数:5
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